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\ 19-Nov-2025 Bharat Arora Proof-9 Reader’s Sign _______________________ Date __________

3. Find the area of these objects:

a. 3 cm b. c.

3 cm

d. e. f. 60 cm

45 cm

4. Complete the following tables:

a. rectangle b. Square
Length Breadth Area Side Area
(cm) (cm) (sq. cm) (cm) (sq. cm)

i. 9 54 i. 6
ii. 15 345 ii. 8
iii. 9 12 iii. 12
iv. 32 1600 iv. 81
v. 4 112 v. 11
vi. 11 187 vi. 13

5. Find the area of a rectangle if:
a. length = 20 cm, breadth = 12 cm b. length = 14 cm, breadth = 10 cm
c. length = 1 m 32 cm, breadth = 80 cm

6. Find the area of a square with a side of:
a. 16 cm b. 40 cm c. 34 m
7. A rectangular plot has an area equal to 2550 sq. m. If its length is 75 m, find the
breadth of the rectangular plot.

8. The length and breadth of a rectangular field are 46 m and 18 m respectively. Find the
cost of ploughing the field at the rate of `3 per sq. metre.

9. How many blocks, each 25 cm long and 12 cm wide, will be required to lay a path
which is 12 m long and 4 m wide?

10. Find the cost of painting the four walls of a square room if each wall is 4 m high and
each side of the room is 6 m long. The cost of painting is `50 per sq. m.

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Perimeter and Area