1. ## Geometry

A cylinder with radius 3 inches and height 4 inches has its radius tripled. How many times greater is the volume of the larger cylinder that the smaller cylinder?

2. Hello,

Let r be the previous radius.

$V=\pi r^2 h$

Now, the new radius is 3r.

So $V'=\pi (3r)^2 h=9 \pi r^2 h=9 V$