###### Question

##### Each cheerleader at Central Middle

##### School has 2 15-inch-tall megaphone

##### with a 3.5-inch radius tO help magnify

##### the volume of his or her voice. In terms

##### of r, what is the volume of air that each

##### megaphone can hold?

###### Answer

#### The volume of air that each megaphone can hold is approximately 5.9 r^3.