Question

the radio two cylinders are in the ratio 2 ratio 3 and their height are in the ratio 5 ratio 3 calculate the ratio of the curved surface areas

Answer 1

CYLINDER 1
radius be 2x
height be 5x

csa of a cylinder= 2pirh
                          =2 pi 2x*5x
                          =2 pi 10x^2
CYLINDER 2
radius be 3x
height be 3x

csa of the cylinder = 2*pi*9x

raito of their csa= csa of cylinder 1/ csa of cylinder 2
                         = 2pi 10x/2pi 9x
                         =10/9
                         =10:9
ans: the ratio is 10:9
hope you understood it
thanks for asking....cheers!

Answer 2

hope this solution will help you