How much is the radius of the Earth at the equator greater than the radius at the poles?
(21 KM) The Earth is not a perfect sphere; it is an oblate spheroid,meaning it bulges at the equator and is flattened at the poles.
The equatorial radius of the Earth is approximately $6378 \; km$.
The polar radius of the Earth is approximately $6357 \; km$.
The difference between the equatorial radius and the polar radius is $6378 \; km - 6357 \; km = 21 \; km$.
The equatorial radius of the Earth is approximately $6378 \; km$.
The polar radius of the Earth is approximately $6357 \; km$.
The difference between the equatorial radius and the polar radius is $6378 \; km - 6357 \; km = 21 \; km$.
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