Page 231 - ICSE Math 6

Area of each tile = Side × Side
= 0.5 m × 0.5 m = 0.25 sq. m
Area of floor
Number of tiles =
Area of each tile
42
= = 168 tiles
0.25
Cost of 1 tile = ` 60
∴ Total cost of tiles = 168 × 60 = ` 10,080

EXERCISE 21.2

1. Find the area of a square of side:
(a) 17 m (b) 7.5 cm (c) 5.5 m (d) 14 cm

2. Find the area of a rectangle of:
(a) length = 7 cm, breadth = 6 cm (b) length = 6.5 m, breadth = 4.5 m
2
3. The area of a square is 144 cm . Find the length of the side of the square.
4. A square and a rectangle have equal areas. If the length and breadth of the rectangle are 25 cm
and 9 cm respectively, find the side of the square.
2
5. The area of a rectangle is 117 cm and its length is 9 cm. Find the breadth of the rectangle.
6. Find the area of a rectangle whose breadth is 7 m and its perimeter is equal to that of a square
with side 12 m.
7. Find the cost of levelling a rectangular field of 13 m by 15 m at the rate of ` 5.6 per square metre.

8. Find the area of the shaded region.
10 cm

(a) 8 cm (b) 6 m 12 m

4 cm 8 m

4 cm
12 m
9. Find the area of each figure.

9 m
4 m

(a) (b) 9 m 5 m

12 cm
10. A drawing room is 5 m 40 cm long and 4 m 10 cm wide. How much carpet is required to cover the
floor of the drawing room? What will be the cost of the carpet, if 1 sq. m of carpet costs ` 325?

215