Q10 of 70 Page 19

The radii of two cylinders are in the ratio 2 : 2 and their heights are in the ratio 5 : 3. Calculate the ratio of their columes and the ratio of their curved surfaces.


Given,


Ratio of radii of cylinders = r1:r2 =


Ratio oh heights of cylinders = h1:h2 =


So, ratio of their volumes = 12h1 : πr22h2 =


Ratio of their curved surface areas = 2πr1h1 : 2πr2h2 =


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[Use π = 22/7]