The length and the breadth of a rectangular field are in the ratio 5 : 4 and its area is 3380 m². Find the cost of fencing it at the rate of ₹ 75 per m.

The length and the breadth of a conference hall are in the ratio 7 : 4 and its perimeter is 110 m. Find :

(i) area of the floor of the hall.

(ii) number of tiles, each a rectangle of size 25 cm x 20 cm, required for flooring of the hall.

(iii) the cost of the tiles at the rate of ₹ 1,400 per hundred tiles.

Two parallel sides of a trapezium are in the ratio 2 : 3 and the distance between them is 12 cm. If the area of the trapezium is 240 cm²; the length of its larger parallel side is :

1. 16 cm

2. 20 cm

3. 24 cm

4. 32 cm

The adjacent sides of a parallelogram are 12 cm and 9 cm. The distance between longer sides is 6 cm; the distance between shorter sides is :

1. 12 cm

2. 9 cm

3. 8 cm

4. 6 cm