Mathematics
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.
Related Questions
A rectangular field is 30 m in length and 22 m in width. Two mutually perpendicular roads, each 2.5 m wide, are drawn inside the field so that one road is parallel to the length of the field and the other road is parallel to its width. Calculate the area of the crossroads.
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 parallel sides of a trapezium are 12 cm and 10 cm. If the distance between the parallel sides is 10 cm; the area of the trapezium is :
220 cm2
110 cm2
55 cm2
165 cm2
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 :
16 cm
20 cm
24 cm
32 cm