Explanation
The radius of a sphere is the distance from its center to its surface. Assuming a sphere with a radius r its volume is given by the following formula:
[tex]V=\frac{4}{3}\pi r^3[/tex]
In this case the radius of the sphere is of 4.7 miles. Then we take r=4.7 and we find its volume:
[tex]V=\frac{4}{3}\pi\cdot4.7^3=434.9[/tex]Answer
Then the answer is 434.9.
