Question

The radii of
two cylinders are in the ratio 2 : 3 and their heights are in the ratio
5:3. Calculate the ratio of their curved surface areas.​

Answer 1

hope this answer will be helpful ♥️♥️

Answer 2

Given,

r1:r2

=2:3

h1:h2

=5:3

soln,

let the common multiple be x

so,

ratio of csa

=2πrh/2πrh

so,

2×π×2x*5x/2×π×3x*3x

=20/18

10/9

=10:9

So, ratio of csa is 10:9