Page 154 - ICSE Math 5

(d) If the breadth of a rectangular field is 48 m and its area is 2,880 m , find the length
2
of the rectangular field.
2
(e) The area of a playground is 240 m . If its length is 20 m, find the breadth of the
playground.

(f) The floor of a room is 12 m long and 10 m wide. Find the cost of carpeting the floor,
2
if the cost of carpeting is ` 25 per m .
(g) Find the area of a square whose perimeter is 48 m.
(h) Find the area of a square field whose side is 65 m long.

Review Exercise

1. Find the perimeter of the following.
(a) A stamp of sides 2 cm each.

(b) A rectangular plywood measuring 4 m in length and 2.5 m in breadth.
(c) A figure with three sides measuring 6.3 cm, 5 cm and 7.2 cm.

(d) Perimeter of the figure given below.
1 cm
A B
1 cm
C
D
E
F

H G
2. Find the area of the following.

(a) A square with side 7.2 cm.

(b) A rectangle of length 5 m and breadth 2.5 m.
(c) Area of the figure XYZ. (d) Area of the figure ABCD.
A B 1 cm
1 cm X 1 cm

1 cm
D

Y Z C

3. Solve the following word problems.
2
(a) The area of a rectangular hall is 160 m . If its breadth is 10 m, find the length and
perimeter of the rectangular hall.

(b) How many square tiles of side 10 cm each will be needed to cover a floor which is
300 cm long and 150 cm wide?

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