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 volumes and the ratio of their curved surfaces.​

Answer 1

As radii of two cylinder in in ratio of 2:3

So radius of 1st cylinder=2r

radius of 2st cylinder=3r

heights are in the ratio 5:3.

height of 1st cylinder=5h

height of 2st cylinder=3h

ratio of volume=volume of 1st cylinder/volume of 2nd cylinder

V=Π(2r)

2

∗5h/Π(3r)

2

∗3h

V=20rh/27rh

V=20/27

Hope it helps..... :-)

Answer 2

Answer:

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