Primary 4 Mathematics · Chapter 12 · Practice sheet

Lesson 12.3: Finding Unknown Sides of Rectangles

Name:Date:Marks: / 15

Section A · Multiple choice 4 marks

1. A rectangle has an area of 72 cm² and a length of 9 cm. What is its breadth?1 mark

(A) 8 cm(B) 63 cm(C) 81 cm(D) 4 cm

2. A rectangle has a perimeter of 40 cm and a length of 12 cm. What is its breadth?1 mark

(A) 28 cm(B) 8 cm(C) 16 cm(D) 4 cm

3. A rectangle has a breadth of 5 m and an area of 85 m². What is its length?1 mark

(A) 80 m(B) 425 m(C) 17 m(D) 12 m

4. The length of a rectangle is twice its breadth. Its perimeter is 54 m. What is its breadth?1 mark

(A) 18 m(B) 27 m(C) 6 m(D) 9 m

5. A rectangle has an area of 91 m² and a length of 13 m. What is its breadth?1 mark

6. A rectangle has a perimeter of 62 cm and a breadth of 11 cm. What is its length?1 mark

7. A rectangle has an area of 150 cm² and a breadth of 6 cm. What is its length?1 mark

8. A rectangle has a perimeter of 46 cm and a length of 15 cm. What is its breadth?1 mark

9. What is the area of a rectangle 16 cm long and 7 cm wide?1 mark

10. The length of a rectangle is 3 times its breadth. Its perimeter is 48 cm. Find its area.2 marks

11. A rectangular room has an area of 108 m² and a breadth of 9 m. What is its perimeter?2 marks

12. A rectangular poster has a length of 40 cm and a perimeter of 130 cm. Find its area.2 marks

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