# The diameter of the earth is 7920miles and that of the moon is 2160 miles. Comoare their volumes

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by Kyzeryan

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by Kyzeryan

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The earth and the moon are assumed to be spheres.

The volume of a sphere is given by the formula**V= 4/3 (πr^****3)**, where r is the radius of the sphere.

Note that the radius is 1/2 the diameter.

So the**radius of the earth** is **3960 miles** (this is 7920/2)

And the**radius of the moon** is **1080 miles **(this is 2160/2)

We can now solve for the volumes of the earth and the moon by using the formula.

For earth, V=4/3 (π x 3960^3) which is equal to**2.6 x 10^11 cubic miles**.

For the moon, V=4/3 (π x 1080^3) which is equal**to 5.3 x 10^9 cubic miles**.

This means that the**earth has a larger volume than the moon** and is generally larger in size.

The volume of a sphere is given by the formula

Note that the radius is 1/2 the diameter.

So the

And the

We can now solve for the volumes of the earth and the moon by using the formula.

For earth, V=4/3 (π x 3960^3) which is equal to

For the moon, V=4/3 (π x 1080^3) which is equal

This means that the