The volume of a sphere is found from the equation V=4/3πr r is the radius. If the radius is 45 cm and pi is about 3.14, you can rewrite and equation as V=4/3(3.14)(45) Then just solve by multiplying all the terms! 4/3(3.14) = 4.19 4.19(45) = 188.55 So the volume of the ball is 188.55 cm cubed.
