Question

How does the volume of a cone change when the radius is quadrupled and the height is reduced to 1/5 of it's original size? I think the fraction part is 16/15, am i right or wrong?

Answer 1

vol = pi r^2 h


so new vol = pi (4r)^2 h/5

so - how does that compare with your answer?

Answer 2

P.S. insert 1/3 in both equations (sorry)

Answer 3

(It doesn't change the answer though)