Math 9 · Unit 7: Shapes and measurements · Cambridge Lower Secondary Maths Stage 9

Questions

1. 1. What is the area of this rectangle?

   • 10 cm²
   • 24 cm²
   • 12 cm²
   • 20 cm²
   Check

2. 2. What is the area of this triangle?

   • 24 cm²
   • 5 cm²
   • 12 cm²
   • 10 cm²
   Check

3. 3. What is the area of this semicircle with radius 3 cm, to 2 d.p.?

   • 4.71 cm²
   • 9.42 cm²
   • 14.14 cm²
   • 28.27 cm²
   Check

4. 4. What is the area of this compound shape, a rectangle and a triangle?

   • 48 cm²
   • 24 cm²
   • 38.14 cm²
   • 36 cm²
   Check

5. 5. What is the area of this compound shape, a rectangle and a semicircle, to 2 d.p.?

   • 30.28 cm²
   • 52.27 cm²
   • 36.00 cm²
   • 38.14 cm²
   Check

6. 6. What is the area of this compound shape, a semicircle and a triangle, to 2 d.p.?

   • 21.42 cm²
   • 38.14 cm²
   • 40.27 cm²
   • 26.14 cm²
   Check

7. 7. What is the area of this compound shape, made of rectangles A and B?

   • 80 cm²
   • 31 cm²
   • 92 cm²
   • 96 cm²
   Check

8. 8. What is the area of this compound shape, a square A and a triangle B?

   • 40 mm²
   • 60 mm²
   • 48 mm²
   • 36 mm²
   Check

9. 9. What is the area of this compound shape, a rectangle A and a semicircle B, to 2 d.p.?

   • 108.54 cm²
   • 39.27 cm²
   • 45.71 cm²
   • 69.27 cm²
   Check

10. 10. A circle of radius 4 cm has a white triangle inside it, with base 2 cm and height 2√7 cm. What is the shaded area of the circle, to 2 d.p.?

    • 42.27 cm²
    • 44.97 cm²
    • 39.69 cm²
    • 55.56 cm²
    Check

11. 11. This compound shape is made from two rectangles, A and B. Work out the missing lengths.

    Fill the blanks with these.

    • 3
    • 5
    • 4
    • 11
    Check

12. 12. What is the area of this L-shaped compound shape?

    • 36 cm²
    • 56 cm²
    • 41 cm²
    • 29 cm²
    Check

13. 13. For each of these compound shapes, work out the missing lengths.

    Fill the blanks with these.

    • 19
    • 7
    • 6
    • 3
    • 5
    Check

14. 14. What is the area of this compound shape made of rectangles A and B?

    • 195 cm²
    • 135 cm²
    • 105 cm²
    • 120 cm²
    Check

15. 15. What is the area of this compound shape made of rectangles A and B?

    • 130 cm²
    • 100 cm²
    • 90 cm²
    • 160 cm²
    Check

16. 16. What is the area of this compound shape?

    • 112 cm²
    • 128 cm²
    • 80 cm²
    • 104 cm²
    Check

17. 17. What is the area of this compound shape, to 2 d.p.?

    • 152.55 cm²
    • 96.00 cm²
    • 209.10 cm²
    • 113.70 cm²
    Check

18. 18. Work out an estimate of the area of each shape, rounding all the numbers to one significant figure. Which gives the estimates for a, b, c and d?

    • a 130 cm², b 63 m², c 81 cm², d 6000 mm²
    • a 60 cm², b 36 m², c 27 cm², d 2400 mm²
    • a 95 cm², b 50 m², c 40 cm², d 3000 mm²
    • a 95 cm², b 90 m², c 81 cm², d 12 000 mm²
    Check

19. 19. What is the area of this shape, to 1 d.p.?

    • 125.4 cm²
    • 55.9 cm²
    • 62.7 cm²
    • 90.7 cm²
    Check

20. 20. What is the area of this shape, to 1 d.p.?

    • 34.2 m²
    • 60.6 m²
    • 47.7 m²
    • 61.1 m²
    Check