Earth's circumference is the distance around Earth. Measured around the equator, it is 40,075.017 km (24,901.461 mi). Measured passing through the poles, the circumference is 40,007.863 km (24,859.734 mi). [1] Treating the Earth as a sphere, its circumference would be its single most important measurement. [2]

This online calculator calculates Earth radius at given latitude using WGS 84 reference ellipsoid

How WGS 84 defines the Earth. Besides being a map/chart datum WGS 84 (World Geodetic System of 1984) also defines the shape and size of the ellipsoid of revolution (an oblate spheroid) that is considered to be the best representation of the Earth:

Calculates radius and diameter of the Earth for a given latitude. The radius of the earth is the distance from the center to the edge. The diameter is the distance from edge to edge through the center, which is twice the radius. Earth isn't a perfect sphere, but is …

Earth circumference at Equator: 40,070 kilometers = 24,883 miles Earth day: 24 hours Then Earth Rotation Speed at our Equator: 1670 km/hr = 1037 mi/hr Note that our Earth has 24 Time Zones, so each zone is 1670 km or 1037 miles across at the Equator. The Equator is 0° latitude. Going north, latitude increases to 90° North (N) latitude at the

the Earth is spherical, Eratosthenes found his latitude. From the known distance to Syene, about 800 km south of Alexandria, Eratosthenes calculated the circumference of the Earth—an amazing accomplishment, especially given the simplicity of his apparatus. In this project, you’ll be able to follow in the footsteps of the great Eratosthenes’.

Latitude: The shape and surface of the earth is a sphere or globe. Horizontal measurement and locations up and down the surface of the earth from the equatorial centerline circumference consists of Latitudes. There are 90 degrees North latitudes and 90 degrees South latitudes with the equator representing 0 degrees latitude.

When measured around the equator, the circumference of the Earth is 131,477,280 feet. It is 131,260,800 feet when measured from the North Pole to the South Pole. We can use a mathematical formula to find the circumference of the Earth as follows:

Lengths of degrees of Parallels: For ordinary map use, remember that the spacing between parallels is nearly the same distance from pole to pole. The flattening at the poles changes the overall difference in spacing approximately 1%. Spacing for meridians changes considerably due to convergence of the great circles at the poles.

2020年3月8日 · Calculate the circumference of latitude 60°South as a percentage of the circumference of the earth take R=6370km