A black board of sides `5\ m\ 20\ c m\ ` and`\ 3\ m\ 40\ c m` is to be painted, find the cost at the rate of `R sdot\ 12` per square metre.

One side of a square plot is 250m, find the cost of levelling it at the rate of Rs. 2 per square metre.

The walls and ceiling of a room are to be plastered. The length, breadth and height of the room are 4.5m, 3m and 350cm, respectively. Find the cost of plastering at the rate of Rs. 8 per square metre.

A room is in the shape of a square of side 4m. Calculate the area of the floor. What is the cost of tiling the floor at the rate of ₹ 24 per square metre?

The circumference of a circular garder is 572 m. Outside the garden a road of width 3.5 m runs around it. Calculate the cost of repairing the road at the rate of Rs 3.75 per square metre

A swimming pool is 20 m in length, 15 m in breadth, and 4m in depth. Find the cost of cementing its floor and walls at the rate of R sdot12 per square metre.

A swimming pool is 20m long 15m wide and 3m deep. Find the cost of repairing the floor and wall at the rate of Rs. 25per square metre.

The length and breadth of a playground are 62 m 60 m and 25 m 40 m respectively. Find the cost of turfing it at Rs 2.50 per square metre.

The sides of a triangle field are in the ratio 5 : 3 : 4 and its perimeter is 180 m. Find : the cost of levelling the field at the rate of Rs 10 per square metre.

The length, breadth and height of a room are 7.5 m, 4.5 m and 3.0 m respectively. There is a door of measure 2.0 m xx 1.0 m and also 2 windows each of measure 1.2 m and 0.75 m. Find the cost of white washing its walls and roof at the rate of Rs. 1.20 per square metre.

A circular pond is of diameter 17.5 m . It is surrounded by a 2 m wide path. Find the cost of constructing the path at the rate of Rs. 25 per square metre.