Question

the ratio of the radii of two cylinder of equal height is 1 ratio 3 find the ratio of their volume​

Answer 1

The given ratio is 1:3

The height is common, lets assume it as "h"

Let the radii of the two cylinders be 1x and 3x respectively.

Ratio of their volumes=
πr²h/πR²h
r²/R²
(1x)²/(3x)²
x²/9x²
=1/9 or 1:9
1:9 is the given ratio