the radii of two cylindrical are in the ratio 3ratio4 and their height are in ratio 5ratio3 find the ratio of their curved surface areas
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let radius be r1 3x
r2 4x
&
height be h1 5y. . h2 3y
now
CSA of cylinder1 /CSA of cylinder2
=2πr1h1/2πr2h2
= r1h1/r2h2
=3x(5y)/4x(3y)
=15/12
=5/4
ratio between their CSA is 5:4
=
=
r2 4x
&
height be h1 5y. . h2 3y
now
CSA of cylinder1 /CSA of cylinder2
=2πr1h1/2πr2h2
= r1h1/r2h2
=3x(5y)/4x(3y)
=15/12
=5/4
ratio between their CSA is 5:4
=
=
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