Page 150 - ICSE Math 5

Exercise 10.1

1. Find the perimeter of the figures whose dimensions are given below.

(a) 12 cm, 15 cm, 19 cm, 16 cm (b) 8 mm, 6 mm, 10 mm, 12 mm
(c) 24 cm, 58 cm, 30 cm, 42 cm, 60 cm (d) 9 m, 6 m, 14 m, 12 m

2. Find the perimeter of rectangles whose dimensions are given below using the formula.

(a) Length = 8 cm, Breadth = 5 cm (b) Length = 11 cm, Breadth = 7 cm
(c) Length = 15 cm, Breadth = 12 cm (d) Length = 20 cm, Breadth = 16 cm

3. Find the perimeter of squares whose dimensions are given below.

(a) 8 cm (b) 12 cm (c) 14 cm
(d) 18 m (e) 21 m (f) 16 cm

4. Find the perimeter of triangles whose dimensions are given below using the formula.
(a) a = 4 cm, b = 5 cm, c = 6 cm (b) a = 8 cm, b = 11 cm, c = 13 cm

(c) a = 14 cm, b = 16 cm, c = 18 cm (d) a = 21 m, b = 23 m, c = 30 m

5. Find the length of the side of squares whose perimeters are given below.
(a) 64 cm (b) 96 cm (c) 112 cm

(d) 144 cm (e) 168 cm (f) 188 cm

6. Solve the following word problems.

(a) If the length of a rectangle is 34 m and its breadth is 20 m, find its perimeter.
(b) The sides of a triangular park are 30 m, 20 m and 50 m. Find the cost of fencing the park
at the rate of ` 3.50 per metre.
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(c) If the length of a rectangular parking is 30 m and its breadth is of the length, find
its perimeter. 5
(d) If the length of the side of a square garden is 75 m, find its perimeter. Also, find the
distance covered by a boy if he goes around the garden 5 times.

(e) If the perimeter of a square frame is 256 cm, find the length of its each side.

Area

Area of a closed figure is the surface or region enclosed by the figure. Look at the given figures.

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