Question

The inner diameter of a circular well is 4.2 m. It is 12 m deep.me
18 4.2 m. It is 12 m deep. Find (i) its inner curved surface area
(ii) the cost of plastering the inner curved surface at the rate of 50 per m.​

Answer 1

Answer:

curved surface area is equal to 158.2 m^2

cost of plastering is equal to 791 rupees