Let radius of first cylinder is r and that of other is R and their height is h. so vol.of first cylinder×36 =vol.of second cylinder 36×pi×r^2×h=pi×R^2×h now pi and h cancel on both sides so r^2×36=R^2 Squareroot36r^2=R 6r=R so radius of second cylinder = 6 times radius of first cylinder