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\ 08-Oct-2025 Bharat Arora Proof-9 Reader’s Sign _______________________ Date __________

practice time 11A

1. Find the perimeter of a rectangle with:
( a) length = 8 cm, breadth = 5 cm (b) length = 56 cm, breadth = 24 cm
( c) length = 5 m, breadth = 2 m (d) length = 8 m, breadth = 250 cm

2. Find the perimeter of a square with side:
( a) 6 cm (b) 7 cm (c) 9 m (d) 11 m

3. The sides of some triangles are given. Find the perimeter of the triangles.
( a) 4 cm, 5 cm and 6 cm (b) 4 cm, 5 cm and 5 cm

( c) 5 cm, 7 cm and 6 cm (d) 13 cm, 14 cm and 15 cm
4. Find the perimeter of the following equilateral triangle whose side is:

( a) 6 cm (b) 5 cm (c) 7 cm (d) 10 cm
5. Complete the following tables:

(a) Length Breadth Perimeter of (b) Side of a Perimeter of
the rectangle square the square

(i) 4 cm 7 cm (i) 5 cm
1
(ii) 5 cm 3 cm (ii) 12 cm
2
(iii) 7 cm 24 cm (iii) 40 cm
1
(iv) 12 cm 60 cm (iv) 7 cm
2
1 1
(v) 9 cm 5 cm (v) 90 m
2 2
1
(vi) 5 cm 21 cm (vi) 20 m
2

6. A rectangular cardboard sheet is 18 cm long and 10 cm broad. Find its perimeter.
7. Find the perimeter of an equilateral triangle in which each side is 9 cm.

8. The perimeter of a triangle is 24 cm and two of its sides measure 6 cm and 7 cm,
respectively. Find the length of the third side of the triangle.
9. The perimeter of a rectangular garden is 196 m and its breadth is 32 m. Find its length.

10. Find the perimeter of an isosceles triangle, each of whose equal sides measures 8 cm
and the length of the third side is 5 cm.
11. Swastik walks four rounds around a square park, each side of which measures 102 m.
How much distance does he walk?

12. The total length of the fence around a square field is 308 m. Find the length of each
side of the square field. Also, find the cost of fencing around the field at the rate of
`28 per metre.

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