Question 156444
v = 4/3 * pi * r^3

pi = constant of 3.141592654 (from calculator)

r = radius

if radius = 10.5 inches then volume of the volleyball would be ...

4/3 * pi * (10.5)^3

= 4/3 * pi * 1157.625 cubic inches

= 4/3 * 3.141592654 * 1157.625 cubic inches

= 4849.048261 cubic inches.

= 4849 cubic inches rounded to nearest integer.