What is the circumferance of the earth?

Answer 1

The Earth is an oblate ellipsoid-a sphere slightly flattened at the poles and bulging at the equator. The distance around the Earth at the equator is 24,902 miles (40,075 kilometers). The distance around the Earth through the poles is 24,860 miles (40,008 kilometers).

Answer 2

The circumference of the earth at the equator is 24,901.55 miles (40,075.16 kilometers).

But, if you measure the earth through the poles the circumference is a bit shorter - 24,859.82 miles (40,008 km). Thus the Earth's spin makes it a bit wider than it is tall, giving it a slight bulge at the equator. This shape is known as an ellipsoid or more properly, geoid (earth-shaped).

Answer 3

One way is to multiply earth's radius by 2 pi. Earth's radius is 6378 km. That multiplied by 2 pi is 40,074 km.

Another way is to measure the distance around at the equator.

A third way is to measure the distance between two points that are due north and south of each other. Use a protractor to measure the angle of elevation of the north star. Use geometry and trigonometry to calculate the number of degrees of circumference in your measurement and use ratios to extrapolate that to the circumference of the earth.

A Greek mathematician estimated the earth's circumference to within about 1/4 percent accuracy over 2200 years ago.

Answer 4

The radius of the Earth can be calculated with a method that was discovered by Eratosthenes of Cyrene in the 3rd century BC. The method as an equation is written as: 360 degrees/a = circumference/arc length where a is equal to an arc length.

Answer 5

The radius of the earth is about 4000 miles. There are 5280 feet per mile, or 21 million feet to the center of the earth. The circumference of a circle is 2pi(r), or for the earth, 132,700,000 feet. (133 million feet).

Answer 6

About 40,000 km. The exact answer varies, depending on whether you go over the poles, or around the equator.

About 40,000 km. The exact answer varies, depending on whether you go over the poles, or around the equator.

About 40,000 km. The exact answer varies, depending on whether you go over the poles, or around the equator.

About 40,000 km. The exact answer varies, depending on whether you go over the poles, or around the equator.

Answer 7

About 40,000 km or 40 million meters. In fact, this is how the meter was originally defined.

Answer 8

Earth's circumference is 40,075 km with a radius of 6,371 km. The planet is the third from the sun and it is also known as world Terra or Gaia.

Answer 9

24,902 miles (40,075 kilometers) at the equator and 24,860 miles (40,008 kilometers) around through the poles.

Answer 10

About 40,000 km. The exact answer varies, depending on whether you go over the poles, or around the equator.