What effect does doubling the radius of a cylinder have on the volume of the cylinder?

A. The volume is doubled.

B. The volume is quadrupled.

C. The volume is halved.***

D. The volume is multiplied by one-fourth.

Im not sure what the answer is so If you do or you could help me get the right answer that would be amazing :)

1 answer

v = πr^2 h
replacing r with 2r gives you
π(2r)^2 h = 4πr^2h = 4v