Math Radius
posted by Mike on .
The volume of a sphere is V = 14,130 ft3. What is its surface area?
What is it's radius?
The volume of a sphere is V = 4443 m3. What is its surface area?
What is it's radius?


I'm confused on how to use the formula. I got an answer but it wasn't right.

V= 4/3 PI r^3 r= cubrt(3*V/4pi)
A 4PI r^2 r= (sqrt(Area/4PI ))