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Primary 4 Mathematics · Chapter 12 · Practice sheet

Lesson 12.5: Area of Composite Figures

Name:Date:Marks:    / 15

Section A · Multiple choice 4 marks

1. All the lines meet at right angles. What is the area of the figure?1 mark

8 cm3 cm4 cm3 cm
(A) 56 cm²(B) 24 cm²(C) 36 cm²(D) 30 cm²

2. A rectangular floor is 16 m by 9 m. A rug 6 m by 4 m is in the middle. What is the area of the floor not covered by the rug?1 mark

6 m × 4 m16 m9 m
(A) 168 m²(B) 24 m²(C) 100 m²(D) 120 m²

3. All the lines meet at right angles. What is the area of the T-shape?1 mark

9 cm3 cm5 cm3 cm
(A) 42 cm²(B) 72 cm²(C) 34 cm²(D) 27 cm²

4. A square with sides of 10 cm is joined to a rectangle 10 cm by 6 cm. What is the total area?1 mark

(A) 120 cm²(B) 160 cm²(C) 76 cm²(D) 60 cm²

Section B · Write your answer 11 marks

5. All the lines meet at right angles. What is the area of the staircase figure?1 mark

2 m2 m2 m2 m2 m2 m

6. A picture frame is 18 cm by 12 cm. The window inside is 10 cm by 6 cm. What is the area of the frame (shaded part)?1 mark

10 cm × 6 cm18 cm12 cm

7. A rectangle 12 cm by 7 cm is joined to a square with sides of 7 cm. What is the total area?1 mark

8. All the lines meet at right angles. What is the area of the figure?1 mark

10 cm4 cm5 cm4 cm

9. A square of side 8 cm is cut from a square of side 20 cm. What is the area of the shaded part?1 mark

8 cm20 cm20 cm

10. A garden is 20 m by 14 m. A path 2 m wide runs all round inside the edge of the garden. What is the area of the path?2 marks

11. A wall is 5 m by 3 m. A window 2 m by 1 m and a door 1 m by 2 m are not painted. What is the area that is painted?2 marks

12. All the sides are equal and all the lines meet at right angles. Each side is 4 cm. What is the area of the cross?2 marks

4 cm4 cm4 cm4 cm4 cm4 cm4 cm4 cm4 cm4 cm4 cm4 cm
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