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 = 
10