A poster of size 10 cm by 8 cm is pasted on a sheet of cardboard such that there is a margin of width 1.75 cm along each side of the poster. Find (a) The total area of the margin (b) The cost of the cardboard used at the rate of Re 0.60 per `c m^2`

A picture is painted on a cardboard 8 cm long and 5 cm wide such that there is a margin of 1.5 cm along each of its sides. Find the total area of the margin.

A picture is painted on a cardboard 8 cm long and 5 cm wide such that there is a margin of 1.5 cm along each of its sides. Find the total area of the margin.

A path 5 m wide runs along inside a square park of side 100 m. Find the area of the path. Also find the cost of cementing it at the rate of Rs250 per 10m^2.

A path 1 m wide is built inside a square park of side 30 m along its sides. Find the area of the path. Calculate the cost of constructing the path at the rate of Rs 70 per m^2

Two crossroads, each of width 3 m, run at right angles through the centre of a rectangualr park of length 90 m and breadth 60 m and parallel to its sides. Find the area of the roads. Also find the cost of constructing the roads at the rate of Rs 120 per m ^(2).

A rectangular hall is 5.25 long and 3.78 m wide. Its floor is to be covered with square tiles, each of side 21 cm. Find the cost of ties required at the rate of Rs. 5 per tile.

A hemispherical bowl made of brass has inner diameter 10.5cm. Find the cost of tinplating it on the inside at the rate of Rs. 4 per 100\ c m^2

The length of a rectangular blackboard is 2 times its width. If the width is 1.4 m find its area. Also find the cost of painting the blackboard at the rate of rupes 75 per m^(2)

The length of a hall is 18 m and its width is 13.5 m. Find the least number of square tiles, each of side 25 cm, required to cover the floor of the hall, (i) without leaving any margin. (ii) leaving a margin of width 1.5 m all around. In each case, find the cost of the tiles required at the rate of Rs. 6 per tile.

A saree 4 m long and 1.25 m wide has a border of width 25 cm all around it on the inside .Find the cost of knitting the border at 20 paise per cm^(2) .