Question

The curved surface of a 16 m deep cylinder is plastered with concrete at the
rate of Rs 15 per m2. If the total cost of plastering the curved surface is
Rs 5280, find the capacity of the cylinder.

Answer 1

total cost of plastering/rate per m^2=curved surface area of the cylinder
5280/15=2*pi*r*h
352=2*22/7*r*16
352*7/44*16=r
3.5m=r
capacity of cylinder=volume of cylinder
volume of cylinder=pi*r@*h
22/7*16*3.5*3.5
1232m^3