Question

The height of a conical tank is 60 cm and the diameter of its base is 64cm. the cost of painting it from outside at the rate of rs. 35 per sq. m. is

Answer 1

Ans- The c.s.a of cone is: 22/7*r*l
22/7*32*60
6034.3cm (approx)
6034.3*35
rs-211200.5(approx).