Question

Joey has a beach ball with a radius of 20 cm. What volume of air will it hold when fully inflated? [Round to nearest tenth.]

A) 83.8 cm3
B) 251.4 cm3
C) 1676.2 cm3
D) 33,493.3 cm3

Answer 1

D

Explanation:

V=
`(4)/(3)` π
`r^(3)`

r=20 cm

V=
`(4)/(3)`π(
`20^(3)`)= 33,493.3
`cm^(3)`

Answer 2

D) 33,493.3 cm3

Explanation:

We know that

The volume of the sphere (beach ball) is equal to

`V=(4)/(3) \pi r^(3)`

we have

`r=20cm`

substitute

`V=(4)/(3)\pi (20^(3) )=33,493.3 cm^(3)`