EASY 5 POINTS!!!! You have a basketball trophy in your room. The ball on the trophy has a diameter of 9 inches. What is the volume of the ball? Use 3.14 for pi.

volume = (4/3) x pi x r^3
diameter = 9 so radius = 9/2 = 4.5
V =(4/3) x 3.14 x 4.5^3 = 381.51 cubic inches