SOLUTION: If earth's radius is 4000mi, With 2/3 covered by water and 1/3 covered by land. How much water is on the earth?
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Question 410185: If earth's radius is 4000mi, With 2/3 covered by water and 1/3 covered by land. How much water is on the earth?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
No way to tell because you didn't provide data on the average depth of the water. You can approximate the area of the surface of the water by using the formula for the surface area of a sphere:
and then multiplying the result by 
I say approximate because, in the first place, the earth is not precisely a sphere, it is an oblate spheroid (or oblate ellipsiod or ellipsoid of revolution), and in the second place the 
water to land ratio is itself a gross approximation.
But then, that is not what you asked is it?
John
My calculator said it, I believe it, that settles it
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