the radii of two cylinders are in the ratio 2 is to 3 and their Heights are in the ratio 5 :3 calculate the ratio of their curved surface areas
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let first cylinder's radius be 2x
second cylinder's radius be 3x
also let first cylinder's height be 5y
second cylinder's height be 3y
then curved surface area of 1st cylinder
=2π*2x*5y=20πxy
then curved surface area of 2nd cylinder
=2π*3x*3y=18πxy
then ratio=10:9.................(ans)
second cylinder's radius be 3x
also let first cylinder's height be 5y
second cylinder's height be 3y
then curved surface area of 1st cylinder
=2π*2x*5y=20πxy
then curved surface area of 2nd cylinder
=2π*3x*3y=18πxy
then ratio=10:9.................(ans)
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