Answer:
3 ft
Explanation:
The volume of a sphere is given by
V = 4/3 pi r^3
36 pi = 4/3 pi r^3
Divide each side by pi
36 pi /pi= 4/3 pi r^3/pi
36 = 4/3 r^3
Multiply each side by 3/4
36 *3/4 = 3/4 *4/3 r^3
27 = r^3
Take the cube root of each side
27^ 1/3 = r^ 3 ^ 1/3
3 = r