Saturday, October 11, 2008

Diameter of earth

The diameter of the earth at equator is 7,926 miles or 12,756 kilometers.

The diameter of the earth through poles is 7,901 miles or 12,715 kilometers.

Thus the earth is 25 miles or 41 km 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-like).

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