hi m,y question is we take radious of earth equal to 6400km but the radous of earth is differnt at poles and at equator then which radious we take???

Asked by zubair ramzan | 2nd Oct, 2012, 11:16: AM

Expert Answer:

Earth is not perfectly spherical, so no single value serves as its natural radius. Distances from points on the surface to the center range from 6,353 km to 6,384 km. Several different ways of modeling the Earth as a sphere each yield a mean radius of 6,371 km, which can be further approximated to 6400 km.

Answered by  | 3rd Oct, 2012, 12:11: PM

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