A big hall of house of Mousumi is in the form of rectangle of which length and breadth are in the ration 9 : 5 and perimeter is 140 meter. Mousumi wants to cover the floor of her hall with rectangular tiles of dimension 25 cm. × 20 cm. The rate of each 100 tiles is Rs. 500. Let us calculate the cost for covering the floor with tiles is.

Let us write by calculating that how much length of wall in meter is required for walling outside round the square field, whereas the length of diagonal of the square land is 20√2 meter. Let us write by calculating how much cost will be for planting grass at the rate of Rs. 20 per sq. meter.

We shall fence our rectangular garden diagonally. The length and breadth of rectangular garden are 12 meter and 7 meter. Let us calculate the length of fence.

The cost of carpeting a big hall of length 18 meters is Rs. 2160. If the breadth of the floor would be 4 meter less, then the cost would have been Rs. 1,620. Let us calculate perimeter and area of the hall.

The length of diagonal of a rectangular land is 15 meter and the difference of length and breadth is 3 meter. Let us calculate perimeter and area.