Find the cost of plastering the inner surface of a well at Rs. `9. 50\ p e r\ m^2,` if it is 21m deep and diameter of its top is 6m.

What will be the cost to plaster the inner surface of a well 14 m deep and 4 m in diameter at the rate of Rs. 25 per square meter ?

How many cubic metres of earth must be dogout to sink a well 21m deep and 6m diameter? Find the cost of plastering the inner surface of the well of Rs. 9. 50\ p e r\ m^2dot

Find the total surface area of a cone,if its slant height is 21m and diameter of its base is 24m.

Find the total surface area of a cone, if its slant height is 21 m and diameter of its base is 24 m.

Find the total surface area of a cone, if its slant height is 21 m and diameter of its base is 24 m.

Find the total surface area of a cone, if its slant height is 21 m and diameter of its base is 24 m.

Find the total surface area of a cone, if its slant height is 21 m and diameter of its base is 24 m.

Find the total surface area of a cone, if its slant height is 21 m and diameter of its baseis 24 m.

A well has to be dug out that is to be 22.5m deep and of diameter 7m. Find the cost of plastering the inner curved surface at Rs 3 per sq.meter.(a) Rs 1465 (b) Rs 1475 (c) Rs 1485 (d) Rs 1495