What will happen to the volume of a cylinder if the length if the height is tripled?

A. Double

B. Stay the same

C. Triple

D. 9 times as large

Triple

Step-by-step explanation:

V = π * r^2 * h

h is directly proportional to V so when h increases V increases.

This is a linear relationship so if h is tripled the volume will be tripled as well.

if r tripled then V would be 9 times as large since r has a square relationship with V.

If you're unsure about these just plug in number r = 2, h = 4, and perform the operation they ask you to do (triple or double) and you'll always get it right.