The slant height and base diameter of a conical tomb are 25 m and 14 m respectively. Find the cost of white washing its curved surface at the cost of Rs 210 per `100m^(2).`

The slant height and base diamater of a conical tomb are 25 m and 14m respectively. Find the cost of with-washing its curved surface at the rate of Rs 210 per 100 m^(2).

The length, breadth and height of a room are 5 m, 4 m and 3 m respectively. Find the cost of white washing the walls of the room and the ceilling at the rate of Rs 7.50 per m^(2).

The inner diameter of a circular well is 3.5 m. It is 10m deep. Find the cost of plastering this curved surface at the rate of Rs 40 per m^(2).

A cylindrical pilar is 50 cm in diameter and 3.5 m in height. Find the cost of painting the curved surface of the pillar at the rate of Rs 12.50 per m^(2).

Find the cost of fencing a square park of side 250 m at the rate of ₹ 20 per metre.

A rent is in the shape of a cylinder surmounted by a conical top. If the height and diameter of the cylindrical part are 2.1 m and 4m respectively , and the slant height of the top is 2.8m, find the area of the canvas used for making the tent. Also. find the cost of the canvas of the tent at the rate of Rs 500 "per"m^(2) ( Note that the base of the tent will not be covered with canvas. )

The inner diameter of a circular well is 3.5 m. It is 10 m deep. Find (i) Its inner curved surface Area, (ii) The cost of plastering this curved surface at the rate of Rs 40 per m^(2).

The length and breadth of a rectangular piece of land are 500m and 300m respectively. Find: (i) its area (ii) the cost of the land, if 1m^2 of the land costs rs10,000.

A storage tank consists of a circular cylinder with a hemisphere stuck on either end. If the external diameter of the cylinder be 1.4 cm and its length be 8 m. Find the cost of painting it on the outside at rite of Rs. 20per m^2 .