A cylinder-shaped drainage pipe 66 in. long measures 25.12 in. around.

What is the volume of the drainage pipe?

Enter your answer as a decimal in the box. Use 3.14 for π.

V=hpir^2

tricky, they didn't give us radius

they just gave circiufmerece

c=2pir

25.12=2pir

divide by 2 both sides

12.56=pir

divide by 3.14 both sides

4=r

subsitutet

v=hpir^2

v=66pi4^2

v=66pi16

v=1056pi

v=3315.84 cubic inches