Question

the radii of two right circular cylinders are in the ratio 3:4 and their height are in the ratio 1:2 calculate the ratio of their curved surface areas.

Answer 1

Answer:

CYLINDER 1

radius-3r

height-h

CYLINDER 2

radius-4r

height-2h

Requited ratio =

$\frac{2\pi3rh}{2\pi4r2h}$

$\frac{3}{8}$

Ratio of CSA = 3:8