The radius of a cylinder is quadrupled, determine the percent the volume increase.

Let the height twice as large as the radius.

Assume that the cylinder grows without changing shape.

V=pi*r^2 *h

So this is my task. Normally we get a % the radius increase, and no info about the height, so im kinda stuck.

Dont know if i can use the same method, and i dont know how many % quadrupled would be xD haha, i prolly should.