What is weaving, ar, hectare, square kilometer? How many hectares, square meters and kilometers in one are (hundred) of land? How many square meters, kilometers and acres are in one hectare of land? How many acres, hectares and square meters in one square kilometer?
How many square meters in 1, 10, 100, 1000 acres: table
What is an acre of land? Weave of land is a unit of measurement of the size of the site, weaving is equal to one hundred square meters.
The following units are used to measure areas: square millimeter (mm 2), square centimeter(cm 2), square decimeter (dm 2), square meter (m 2) and square kilometer (km 2).
For example, a square meter is the area of a square with a side of 1 m, and a square millimeter is the area of a square with a side of 1 mm.
You can also say that in one weave of 100 square meters. meters and it will be correct if we say in hectares that one weave is one hundredth of a hectare.
- Weaving is a unit of measurement for the size of a plot, which is often used in a summer cottage or agriculture. In science, it is customary to use an analogue of weaving - ar. Ar (weaving) - the area of a square with a side of 10 m.
- Based on the name of this measure, you can already guess that we are talking about hundreds of meters.
- Indeed, one weave is equal to 100 m 2.
- In other words, one weave will be equal to the area of a square with sides of 10 m.
- Accordingly, in ten acres there will be 1000 m 2.
- 100 acres contain 10,000 m 2, and 1000 acres contain 100,000 m 2.
- In other words, to calculate how many square meters are in a given number of acres, you need to multiply the acres by 100.
Area units
1 weave = 100 square meters = 0.01 hectare = 0.02471 acre
- 1 cm 2 \u003d 100 mm 2 \u003d 0.01 dm 2
- 1 dm 2 \u003d 100 cm 2 \u003d 10000 mm 2 \u003d 0.01 m 2
- 1 m 2 \u003d 100 dm 2 \u003d 10000 cm 2
- 1 ar (weave) \u003d 100 m 2
- 1 ha (hectare) \u003d 10000 m 2
How many acres in 1, 10, 100 square meters: table
Area units conversion table
| Area units | 1 sq. km. | 1 hectare | 1 acre | 1 weave | 1 sq.m. |
| 1 sq. km. | 1 | 100 | 247.1 | 10.000 | 1.000.000 |
| 1 hectare | 0.01 | 1 | 2.47 | 100 | 10.000 |
| 1 acre | 0.004 | 0.405 | 1 | 40.47 | 4046.9 |
| 1 weave | 0.0001 | 0.01 | 0.025 | 1 | 100 |
| 1 sq.m. | 0.000001 | 0.0001 | 0.00025 | 0.01 | 1 |
The system adopted in Russia for measuring land areas
- 1 weave = 10 meters x 10 meters = 100 sq.m
- 1 hectare \u003d 1 ha \u003d 100 meters x 100 meters \u003d 10,000 square meters \u003d 100 acres
- 1 square kilometer = 1 sq. km = 1000 meters x 1000 meters = 1 million sq. m = 100 hectares = 10,000 acres
Inverse units
- 1 sq. m = 0.01 acres = 0.0001 ha = 0.000001 sq. km
- 1 weave \u003d 0.01 ha \u003d 0.0001 sq. km
- To calculate how many acres are in square meters, you need to divide the given number of square meters by 100.
- Thus, in 1 m 2 there are 0.01 weave, in 10 m 2 - 0.1 weave, and in 100 m 2 - 1 weave.
What is a hectare of land?
Hectare- a unit of area in the metric system of measures used to measure land. Field areas are measured in hectares (ha). A hectare is the area of a square with a side of 100 m. So, 1 ha is equal to 100,100 square meters, that is, 1 ha = 10,000 m 2.
Abbreviated designation: Russian ha, international ha. The name "hectares" is formed by adding the prefix "hecto..." to the name of the area unit "ar"
1 ha \u003d 100 ar \u003d 100 m x 100 m \u003d 10,000 m 2
- A hectare is a unit for measuring the size of a plot, which is equal to the area of a square with sides of 100 m. A hectare, like a weave, is mainly used as measuring units only in agriculture and summer cottages.
- The designation of a hectare looks like "ha".
- One hectare is equal to 10,000 m 2 or 100 acres.
How many square meters in 1, 10, 100, 1000 hectares: table
- In order to calculate how many square meters in a given number of hectares, you need to multiply the number of hectares by 10,000.
- Thus, there are 10,000 m 2 in 1 ha, 100,000 m 2 in 10 ha, 1,000,000 m 2 in 100 ha, and 1,000,000 m 2 in 1000 ha.
Thus, one hectare corresponds to 10,000 m2. It can easily fit a football field (0.714 hectares) or more than 16 summer cottages (the area of each is 6 acres). Well, Red Square will be twice as large as one hectare, its area is 24,750 m 2.
1 square kilometer is 100 times larger than 1 hectare. Similarly, we determine: 1 ha - how many acres are in the composition. One weave covers an area of 100 square meters. Therefore, in comparison with a hectare, weaving is 100 times less than a hectare.
- 1 weave\u003d 10 x 10 meters \u003d 100 m 2 \u003d 0.01 ha
- 1 hectare (1 ha)\u003d 100 x 100 meters or 10,000 m 2 or 100 acres
- 1 square kilometer (1 km2)\u003d 1000 x 1000 meters or 1 million m 2 or 100 hectares or 10,000 acres
- 1 square meter (1 m 2)= 0.01 acres = 0.0001 ha
How many acres in 1, 10, 100, 1000 ha: table
| Units | 1 km 2 | 1 ha | 1 acre | 1 weave | 1 m 2 |
| 1 km 2 | 1 | 100 | 247.1 | 10000 | 1000000 |
| 1 ha | 0.01 | 1 | 2.47 | 100 | 10000 |
| 1 acre | 0.004 | 0.405 | 1 | 40.47 | 4046.9 |
| 1 weave | 0.0001 | 0.01 | 0.025 | 1 | 100 |
| 1 m 2 | 0.000001 | 0.000001 | 0.00025 | 0.01 | 1 |
- To calculate how many acres corresponds given number hectare, it is necessary to multiply the number of hectares by 100.
- So, in 1 hectare there are 100 acres, in 10 hectares - 1000 acres, in 100 hectares - 10,000 acres, and in 1000 hectares - 100,000 acres.
How many hectares in 1, 10, 100, 1000, 10,000 acres, square meters: table
| ha | ar | m 2 | cm 2 | |
| 1 km 2 | 100 ha | 10 000 are | 1,000,000 m2 | 1,000,000,000 cm2 |
| 1 ha | 1 ha | 100 are | 10 000 m2 | 100,000,000 cm2 |
| 1 are | 0.01 ha | 1ar | 100 m2 | 1,000,000 cm2 |
| 1 m 2 | 0.0001 ha | 0.01 are | 1 m 2 | 10,000 cm2 |
- To calculate how many hectares are contained in a given number of acres, you need to divide the number of acres by 100.
- And in order to carry out such calculations with square meters, it is necessary to divide their number by 10,000.
- So, in 1 acres there are 0.01 ha, in 10 acres - 0.1 ha, in 100 acres - 1 ha, in 1000 acres - 10 hectares, in 10,000 acres - 100 hectares.
- In turn, in 1 m 2 there are 0.0001 ha, in 10 m 2 - 0.001 ha, in 100 m 2 - 0.01 ha, in 1000 m 2 - 0.1 ha, and in 10000 m 2 - 1 ha.
How many square kilometers are in 1 hectare?
1 ha \u003d 10,000 m 2
1 km 2 \u003d 100 ha
- A square kilometer is a unit of land area measurement, equal to the area of a square with sides of 1000 meters.
- There are 100 hectares in one square kilometer.
- Thus, to calculate the number of square kilometers in a hectare, it is necessary to divide its given number by 100.
- So, in 1 ha there are 0.01 km 2
What is 1 are equal to?
Ar a unit of area in the metric system of measures, equal to the area of a square with a side of 10 m
- 1 ar \u003d 10 m x 10 m \u003d 100 m 2 .
- 1 tithe = 1.09254 ha.
- Arom is a unit of measure for the size of a plot, equal to the area of a square with sides of 10 m.
- In other words, ar is equal to a hundredth.
- In 1 are there are 100 m 2, 1 weave, 0.01 ha, 0.0001 km 2.
How many ares are in one hectare?
- There are 100 ares in one hectare, just like acres.
What is 1 acre equal to?
Acre land measure used in a number of countries using the English system of measures (Great Britain, USA, Canada, Australia, etc.).
1 acre \u003d 4840 sq. yards \u003d 4046.86 m 2
Old Russian units of area measurement
- 1 sq. verst = 250,000 sq. fathoms = 1.1381 km²
- 1 tithe = 2400 sq. fathoms = 10,925.4 m² = 1.0925 ha
- 1 quarter = 1/2 tithe = 1200 sq. fathoms = 5462.7 m² = 0.54627 ha
- 1 octopus \u003d 1/8 tithe \u003d 300 square sazhens \u003d 1365.675 m² ≈ 0.137 ha.
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square kilometer- - Topics oil and gas industry EN square kilometersq.km ...
square kilometer- measure of area of the metric system = 1.000.000 sq. meters 0.38610 English. sq. miles = 0.87869 sq. versts = 91.5298 tithes; the abbreviation for a square kilometer legalized in the USSR: Russian “km2” or “sq. km”, Latin “km2” …
number of inhabitants per square kilometer- - [A.S. Goldberg. English Russian Energy Dictionary. 2006] Topics energy in general EN inhabitants per square kilometerinh/km2 … Technical Translator's Handbook
- (from the Greek chilioi a thousand, and a meter). French linear measure about 469 Rus. soot Dictionary foreign words included in the Russian language. Chudinov A.N., 1910. KILOMETER 1000 meters = 14/15 versts, or 468.7 sazhens. Complete dictionary foreign words... Dictionary of foreign words of the Russian language
"km" redirects here, see also "KM" 1 km = 1000 m = 0.621 miles = 0.9374 versts = 1094 yards = 3281 feet = 1.057 10−13 light years ... Wikipedia
Area is a quantity that in some sense corresponds to the size of a surface. Contents 1 Formal definition 2 Units of measurement 2.1 Metric units ... Wikipedia
Square kilometer (km², km², sq. km) is a unit of area measurement, a multiple of a square meter. 1 km² is equal to: the area of a square with a side of 1 kilometer; 1,000,000 m²; 100 hectares; 0.386 102 square miles; 247.105 381 acres. Back: 1 m² \u003d 0.000 ... ... Wikipedia
Square kilometer (km², km², sq. km) is a unit of area measurement, a multiple of a square meter. 1 km² is equal to: the area of a square with a side of 1 kilometer; 1,000,000 m²; 100 hectares; 0.386 102 square miles; 247.105 381 acres. Back: 1 m² \u003d 0.000 ... ... Wikipedia
Abbreviations- And on the bill means that the bill is accepted. a., arsh. arshin. and ar. a2. square arshin, a3. cubic arshin. an. f. (an. pound) English pound. b. g., b/g next year. b. m., b / m next month. B. M. O., b. m / o without my responsibility ... ... Reference commercial dictionary
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- A traveler fascinated by Switzerland, Konstantin V. Novozhilov. Switzerland got a nature of unique beauty: snow-white Alps, emerald lakes, turbulent rivers and waterfalls, majestic glaciers, alpine meadows. At the same time, a country with a population density of…
- Mysterious places in Russia, Afonkin Sergey Yurievich. People are always attracted to the incomprehensible, mysterious, unknown. It was this thrust that forced the brave captains of past centuries to rush their ships to the horizon line. With no intention of revealing...
If you look into the history of our country, then at first there was a Russian system of measures: sazhen, arshin, mile, verst, field and others.
These names were borrowed in part from English system measures. But on June 4, 1899, everything changed. A royal decree was issued, according to which the metric system of measures began to be used in the Russian Empire. People got the usual meters and kilometers.
- There are 100 centimeters (cm) in 1 meter (m), 1 m = 100 cm.
- There are 1000 meters in 1 kilometer (km), 1 km = 1000 m.
Multiply 1000 meters by 100 centimeters, we get 1 km = 100,000 cm.
Let's calculate how many millimeters are in 1 kilometer.
1 centimeter = 10 millimeters (mm)
Multiply 10 mm by 10,000 cm. We get, in 1 km = 1,000,000 mm.
There is another measure of length - decimeter (dm).
1 dm = 10 cm = 100 mm = 0.1 m = 0.0001 km.
Origin of words.
The word kilometer appeared in our language from French from the word kilometre (from the merger Greek words, translated as a thousand and a meter)
The word meter originally comes from the Greek metron, meaning measure. And in our language it also came from French (metre).
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How to convert counters to kilometers?
The distance to one kilometer is 1000 meters.
How many in a kilometer
Therefore, it is one meter per thousand kilometers:
Therefore, to convert meters to kilometers, the number of meters is divided by 1000.
The formula for converting meters per kilometer is:
Conversion from meters to kilometers will be considered on a case-by-case basis.
Express counters in kilometers:
1) 3 meters;
2) 15 meters;
3) 100 meters:
4) 250 meters;
5) 3500 meters;
6) 12.5 meters;
7) 7 2/9 meters.
To reduce the score,
1 km = 1 km;
1 meter = 1 m.
To convert counters per km, the number of counters is divided by 1000.
The answer can be written either as a normal or as a decimal fraction.
If possible, the normal fraction should be reduced.
When you get a wrong share, choose the whole part from it.
When a mixed number is mixed with a mixed mixed number, it is converted to an irregular fraction:
Svetlana MikhailovnaEnergy measurement
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Often when solving problems in mathematics, and especially in physics, it is necessary to convert km to m. These can be direct problems, such as:
- How many meters in 1 km?
- 2 km - how many meters?
- 3 km, how m?
- How many meters are there in 4 km?
- At 8 km (7 km) how many m?
- How many meters are there in 20 km?
- How many meters in 30 km (100 km)?
- How much does 15 km cost?
- How much is 4 kilometers?
- How much is 9 km?
Tasks will be a little more difficult when you need to translate N km and M m in meters, for example, the following task types could be:
- How many meters is 9 km and 900 meters?
- How many meters for 3 km and 5 m?
- How many meters in 1 km 3 m?
- At 5 km 6 m, how many m?
Separately, one can single out problems in which the number should not be translated, but the numbers in the form of decimal fractions.
- How many meters are there in 1.5 km?
- 1.4 km, how many meters?
- How many meters in 1.2 km?
- How many meters are 25 km?
In meters (m), how many kilometers (km)?
In practice, for example, it is necessary to solve the inverse problems of conversion from meters to kilometers.
- How many miles in 5 m?
- 20 m is how many miles?
- And 100 meters is how many kilometers?
- In 10 meters, how many kilometers?
- In 1 m, how many kilometers?
- At 250 m, how many kilometers?
- How many miles in 30 m?
- At a distance of 500 m, how many kilometers?
Kilometers and meters are units of length and distance.
To understand how to pass the course of kilometers in meters and back, and it is very easy, we will move on to theory.
Kilometers, like meters, are units of length and distance.
And now more about each unit.
kilometers is an abbreviation for km, a unit of distance and length.
The formula for converting kilometers per meter is:
1 km = 1000 m
meter- abbreviated m, also a unit of length and distance. In SI (International System of Units - one of the most widely used in the world), this metric is one of the seven basic units.
By definition, a meter is transported by light in 1/299,792,458 seconds in a vacuum.
Formula to convert meters per kilometer
1 m = 0.001 km = 1/1000 km = 10^(-3) km
In the formula above, the written expression is the same, just using different notation.
How many kilometers are in N km?
Let's try to figure out how many meters in kilometers in the above applications.
Let's start.
| Task number 1: How many meters in 1 km? Solution: According to the formula above, we get: 1 * 1000 = 1000 meters. Answer: 1 km from 1000 meters. |
Task number 6: for 8 km, how many meters? Solution: 8 * 1000 = 8000 meters. Answer: within 8 kilometers 8,000 meters. |
| Task 2: 2 kilometers - how many meters? Solution: Using the formula above, we get: 2 * 1000 = 2000 meters. Answer: 2 km 2000 meters. |
Problem #7: How many meters meters? Solution: 20 * 1000 = 20,000 meters. |
| Task number 3: How many meters in 3 km? Solution: 3 * 1000 = 3000 meters. Answer: 3 km 3000 meters. |
Problem #8: 30 km, how many meters? Solution: 30 * 1000 = 30,000 meters = 30 thousand. m. |
Problem #4: 5 kilometers? Calculators in kilometersSolution: 5 * 1000 = 5000 meters. |
Problem #9: How much does 15 km cost? Solution: 15 * 1000 = 15,000 meters = 15,000 meters. Answer: 15 km - 15 thousand meters. |
| Problem #5: How many meters are there in 4 km? Solution: 4 * 1000 = 4000 meters. Answer: 4 km 4000 meters. |
Problem #10: How much does 9 km cost? Solution: 9 * 1000 = 9000 meters |
How many kilometers are in N meters?
We are now thinking about inverse problems in finding the number of cubes in this number of liters.
| Problem #1: How many miles are there in 5 meters? Solution: 5 * 0.001 = 0.005 kilometers. |
Task number 5: How many kilometers? Solution: 1 * 0.001 = 0.001 km. Answer: v 1 meter 0.001 km. |
| Problem #2: 20m is how many kilometers? Solution: 20 * 0.001 = 0.02 km. |
Problem #6: 250m How many kilometers? Solution: 250 * 0.001 = 0.25 km. Answer: 250 meters - 0.25 kilometers. |
| Task number 3: 100 m - how many kilometers? Solution: 100 * 0.001 = 0.1 km. Answer: 100 meters from 0.1 km. |
Problem #7: How many miles are there in 30m? Solution: 30 * 0.001 = 0.03 km. |
| Problem #4: 10m How many miles? Solution: 10 * 0.001 = 0.01 km. Answer: within 10 meters 0.01 km. |
Problem #8: 500m per kilometer? Solution: 500 * 0.001 = 0.5 km Answer: 50 meters - 0.5 km. |
Convert km to meters online
With the formulas above, which use a regular calculator, you can easily convert kilometers to meters and vice versa.
But for more convenience, we suggest using our online calculators.
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1 square kilometer [km²] = 100 hectares [ha]
Initial value
Converted value
square meter square kilometer square hectometer square decameter square decimeter square centimeter square millimeter square micrometer square nanometer hectare ar barn square mile sq. mile (US survey) square yard square foot² sq. ft (US, survey) square inch circular inch township section acre acre (US, survey) ore square chain square rod² (US, survey) square perch square rod sq. thousandth circular mil homestead sabine arpan cuerda square castilian cubit varas conuqueras cuad electron cross-section tithe (official) household tithe round square verst square arshin square foot square sazhen square inch (Russian) square line Plank area
More about the area
General information
Area is the size geometric figure in two-dimensional space. It is used in mathematics, medicine, engineering, and other sciences, such as calculating the cross section of cells, atoms, or pipes such as blood vessels or water pipes. In geography, area is used to compare the sizes of cities, lakes, countries, and other geographical objects. Area is also used in population density calculations. Population density is defined as the number of people per unit area.
Units
Square meters
Area is measured in SI units in square meters. One square meter is the area of a square with a side of one meter.
unit square
A unit square is a square with sides of one unit. The area of a unit square is also equal to unity. AT rectangular system coordinates this square is at coordinates (0,0), (0,1), (1,0) and (1,1). On the complex plane, the coordinates are 0, 1, i and i+1, where i is an imaginary number.
Ar
Ar or sotka, as a measure of area, is used in the CIS countries, Indonesia and some other European countries, to measure small urban objects such as parks, when a hectare is too large. One ar is equal to 100 square meters. In some countries, this unit is called differently.
Hectare
Real estate is measured in hectares, especially land. One hectare is equal to 10,000 square meters. It has been in use since the French Revolution, and is used in the European Union and some other regions. As well as ar, in some countries the hectare is called differently.
Acre
AT North America and Burma area is measured in acres. Hectares are not used there. One acre is equal to 4046.86 square meters. Initially, an acre was defined as the area that a peasant with a team of two oxen could plow in one day.
barn
Barns are used in nuclear physics to measure the cross section of atoms. One barn equals 10⁻²⁸ square meters. Barn is not a unit in the SI system, but is accepted for use in this system. One barn is approximately equal to the cross-sectional area of the uranium nucleus, which physicists jokingly called "huge as a barn." Barn in English "barn" (pronounced barn) and from a joke of physicists, this word became the name of a unit of area. This unit originated during World War II, and was liked by scientists because its name could be used as a code in correspondence and telephone conversations within the Manhattan Project.
Area calculation
The area of the simplest geometric figures is found by comparing them with a square. famous square. This is convenient because the area of a square is easy to calculate. Some formulas for calculating the area of geometric shapes below are obtained in this way. Also, to calculate the area, especially a polygon, the figure is divided into triangles, the area of \u200b\u200beach triangle is calculated using the formula, and then added. The area of more complex figures is calculated using mathematical analysis.
Area formulas
- Square: square side.
- Rectangle: product of the parties.
- Triangle (side and height are known): the product of a side and the height (the distance from that side to the edge) divided in half. Formula: A = ½ah, where A- square, a- side, and h- height.
- Triangle (two sides and the angle between them are known): the product of the sides and the sine of the angle between them, divided in half. Formula: A = ½ab sin(α), where A- square, a and b are the sides, and α is the angle between them.
- Equilateral triangle: side, squared, divided by 4 times Square root out of three.
- Parallelogram: the product of a side and the height measured from that side to the opposite side.
- Trapeze: the sum of two parallel sides multiplied by the height, divided by two. Height is measured between these two sides.
- A circle: the product of the square of the radius and π.
- Ellipse: product of semiaxes and π.
Surface area calculation
You can find the surface area of simple three-dimensional figures, such as prisms, by unfolding this figure on a plane. It is impossible to obtain a ball scan in this way. The surface area of a sphere is found using the formula by multiplying the square of the radius by 4π. From this formula it follows that the area of a circle is four times less area surface of a sphere with the same radius.
Surface areas of some astronomical objects: Sun - 6.088 x 10¹² square kilometers; Earth - 5.1 x 10⁸; thus, the surface area of the Earth is about 12 times smaller than the surface area of the Sun. The surface area of the Moon is approximately 3.793 x 10⁷ square kilometers, which is about 13 times smaller than the surface area of the Earth.
planimeter
The area can also be calculated using a special device - a planimeter. There are several types of this device, for example, polar and linear. Also, planimeters are analog and digital. In addition to other features, digital planimeters can be scaled to make it easier to measure features on a map. The planimeter measures the distance traveled along the perimeter of the measured object, as well as the direction. The distance traveled by the planimeter parallel to its axis is not measured. These devices are used in medicine, biology, engineering, and agriculture.
Area properties theorem
According to the isoperimetric theorem, of all figures with the same perimeter, the circle has the largest area. If, on the contrary, we compare figures with the same area, then the circle has the smallest perimeter. The perimeter is the sum of the lengths of the sides of a geometric figure, or a line that marks the boundaries of this figure.
Geographic features with the largest area
Country: Russia, 17,098,242 square kilometers, including land and water. The second and third largest countries are Canada and China.
City: New York is a city with the most large area in 8683 square kilometers. The second largest city is Tokyo, covering 6,993 square kilometers. The third is Chicago, with an area of 5498 square kilometers.
City Square: The largest area, covering 1 square kilometer, is located in the capital of Indonesia, Jakarta. This is Medan Merdeka Square. The second largest area at 0.57 square kilometers is Praça dos Giraçois in the city of Palmas, in Brazil. The third largest is Tiananmen Square in China, 0.44 square kilometers.
Lake: Geographers debate whether the Caspian Sea is a lake, but if it is, then it is the largest lake in the world with an area of 371,000 square kilometers. The second largest lake is Lake Superior in North America. It is one of the lakes of the Great Lakes system; its area is 82,414 square kilometers. The third largest is Lake Victoria in Africa. It covers an area of 69,485 square kilometers.
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1 kilometer [km] = 1000 meter [m]
Initial value
Converted value
meter exameter petameter terameter gigameter megameter kilometer hectometer decameter decimeter centimeter millimeter micrometer micron nanometer picometer femtometer attometer megaparsec kiloparsec parsec light year astronomical unit (international) mile (statute) mile (US, geodetic) mile (Roman) 1000 yards furlong furlong (US, geodetic) chain chain (US, geodetic) rope (English rope) genus genus (US, geodetic) perch field (eng. pole) fathom fathom (US, geodetic) cubit yard foot foot (US, geodetic) link link (US, geodetic) cubit (Brit.) hand span finger nail inch inch (US, geodetic) barleycorn (eng. barleycorn) thousandth of a microinch angstrom atomic unit of length x-unit fermi arpan soldering typographic point twip cubit (Swedish) fathom (Swedish) caliber centiinch ken arshin actus (O.R.) vara de tarea vara conu quera vara castellana cubit (Greek) long reed reed long cubit palm "finger" Planck length classical electron radius Bohr radius equatorial radius of the Earth polar radius of the Earth distance from the Earth to the Sun radius of the Sun light nanosecond light microsecond light millisecond light second light hour light days light week Billion light-years Distance from the Earth to the Moon cable lengths (international) cable lengths (British) cable lengths (USA) nautical mile (USA) light minute rack unit horizontal pitch cicero pixel line inch (Russian) vershok span foot fathom oblique fathom verst boundary verst
Converter feet and inches to meters and vice versa
foot inch
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More about length and distance
General information
Length is the largest measurement of the body. In three dimensions, length is usually measured horizontally.
Distance is a measure of how far two bodies are from each other.
Distance and length measurement
Distance and length units
In the SI system, length is measured in meters. Derived quantities such as kilometer (1000 meters) and centimeter (1/100 meter) are also widely used in the metric system. In countries that do not use the metric system, such as the US and the UK, units such as inches, feet, and miles are used.
Distance in physics and biology
In biology and physics, lengths are often measured much less than one millimeter. For this, a special value, a micrometer, has been adopted. One micrometer is equal to 1×10⁻⁶ meters. In biology, micrometers measure the size of microorganisms and cells, and in physics, the length of infrared electromagnetic radiation. A micrometer is also called a micron and sometimes, especially in English literature, is denoted by the Greek letter µ. Other derivatives of the meter are also widely used: nanometers (1×10⁻⁹ meters), picometers (1×10⁻¹² meters), femtometers (1×10⁻¹⁵ meters), and attometers (1×10⁻¹⁸ meters).
Distance in navigation
Shipping uses nautical miles. One nautical mile is equal to 1852 meters. Initially, it was measured as an arc of one minute along the meridian, that is, 1/(60 × 180) of the meridian. This made latitude calculations easier, since 60 nautical miles equaled one degree of latitude. When distance is measured in nautical miles, speed is often measured in nautical knots. One knot is equal to one nautical mile per hour.
distance in astronomy
In astronomy, long distances are measured, so special quantities are adopted to facilitate calculations.
astronomical unit(au, au) is equal to 149,597,870,700 meters. The value of one astronomical unit is a constant, that is, constant. It is generally accepted that the Earth is located at a distance of one astronomical unit from the Sun.
Light year equals 10,000,000,000,000 or 10¹³ kilometers. This is the distance that light travels in a vacuum in one Julian year. This value is used in popular science literature more often than in physics and astronomy.
Parsec approximately equal to 30,856,775,814,671,900 meters or approximately 3.09 × 10¹³ kilometers. One parsec is the distance from the Sun to another astronomical object, such as a planet, star, moon, or asteroid, with an angle of one arc second. One arc second is 1/3600 of a degree, or about 4.8481368 mrad in radians. Parsec can be calculated using parallax - the effect of a visible change in the position of the body, depending on the point of observation. During measurements, a segment E1A2 (in the illustration) is laid from the Earth (point E1) to a star or other astronomical object (point A2). Six months later, when the Sun is on the other side of the Earth, a new segment E2A1 is drawn from the new position of the Earth (point E2) to the new position in space of the same astronomical object (point A1). In this case, the Sun will be at the intersection of these two segments, at point S. The length of each of the segments E1S and E2S is equal to one astronomical unit. If we postpone the segment through the point S, perpendicular to E1E2, it will pass through the intersection point of the segments E1A2 and E2A1, I. The distance from the Sun to point I is the SI segment, it is equal to one parsec when the angle between the segments A1I and A2I is two arcseconds.
On the image:
- A1, A2: apparent star position
- E1, E2: Earth position
- S: position of the sun
- I: point of intersection
- IS = 1 parsec
- ∠P or ∠XIA2: parallax angle
- ∠P = 1 arc second
Other units
League- an obsolete unit of length used earlier in many countries. In some places it is still used, for example, in the Yucatan Peninsula and in rural areas Mexico. This is the distance a person walks in an hour. Marine League - three nautical miles, approximately 5.6 kilometers. Lie - a unit approximately equal to the league. AT English language both leagues and leagues are called the same, league. In literature, the league is sometimes found in the title of books, such as "20,000 Leagues Under the Sea" - famous novel Jules Verne.
Elbow - ancient value equal to the distance from the tip of the middle finger to the elbow. This value was widespread in the ancient world, in the Middle Ages, and until modern times.
Yard used in the British imperial system and is equal to three feet or 0.9144 meters. In some countries, such as Canada, where the metric system is adopted, yards are used to measure the fabric and length of swimming pools and sports fields and grounds, such as golf and football courses.
Meter Definition
The definition of the meter has changed several times. The meter was originally defined as 1/10,000,000 of the distance from North Pole to the equator. Later, the meter was equal to the length of the platinum-iridium standard. Later, the meter was equated to the wavelength of the orange line of the electromagnetic spectrum of the krypton atom ⁸⁶Kr in vacuum, multiplied by 1,650,763.73. Today, a meter is defined as the distance traveled by light in a vacuum in 1/299,792,458 of a second.
Computing
In geometry, the distance between two points, A and B, with coordinates A(x₁, y₁) and B(x₂, y₂) is calculated by the formula:
Post a question to TCTerms and within a few minutes you will receive an answer.Calculations for converting units in the converter " Length and distance converter' are performed using the functions of unitconversion.org .
