Question

Assuming that the Earth is approximately spherical with a diameter of about 12,742 kilometers, what is its volume?



a.

b.




c.

d.

Answer 1

a.1.27 *10^8 b.5.10*10^8

Answer 2

So you apply the Sphere Volume equation of \[V={4 \over 3}\pi r^3\]
You have the diameter of 12742. To find the radius you divide this by 2.
Now plug into the equation and find the closest answer in your list.