Question

The diameter of a tennis ball is 6.42 cm. Find the volume.
Use 3.14 for pi.

Answer 1

The volume of the ball is:

`V_(ball)=(4)/(3)\pi r^3.`

If the diameter of a tennis ball is 6.42 cm, then the radius of tennis ball is 3.21 cm. Then

`V_(ball)=(4)/(3)\pi (3.21)^3=44.101548\pi=44.101548\cdot 3.14=138.47886072` sq. cm.

Answer:
`V_(ball)=138.47886072` sq. cm.