Answer: r = 121.92 cm
Volume = 4/3 x 3.14 x

7587404.65
Explanation:
The radius is given. It's the distance from the center of the sphere to the end. The radius is 4 ft. 1 ft is 30.48cm so 4ft is 121.92cm
(radius) r = 121.92 cm
Volume = 4/3 x 3.14 x

= 4/3 x 3.14 x 1812278.18
= 4/3 x 5690553.49
= 7587404.65