Math 6 · Unit 5: 2D shapes · Cambridge Primary Maths Stage 6

Questions

1. 1. A circle has radius 4 cm. What is its diameter?

   • 8 cm
   • 4 cm
   • 16 cm
   • 2 cm
   Check

2. 2. A circle has diameter 15 cm. What is its radius?

   • 15 cm
   • 7.5 cm
   • 30 cm
   • 5 cm
   Check

3. 3. What is the distance all the way round a circle called?

   • radius
   • centre
   • circumference
   • diameter
   Check

4. 4. A line from the centre to the edge is the …

   • radius
   • circumference
   • chord
   • diameter
   Check

5. 5. A line from edge to edge through the centre is the …

   • arc
   • circumference
   • radius
   • diameter
   Check

6. 6. All radii of a circle are …

   • half the circumference
   • the same length
   • longer at the top
   • different lengths
   Check

7. 7. A wheel has diameter 60 cm. What is its radius?

   • 30 cm
   • 15 cm
   • 60 cm
   • 120 cm
   Check

8. 8. To draw a circle of radius 5 cm, set your compasses to …

   • 2.5 cm
   • 15 cm
   • 5 cm
   • 10 cm
   Check

9. 9. Two circles touch in a row inside a rectangle, as shown. Each has radius 3 cm. How long is the rectangle?

   • 9 cm
   • 3 cm
   • 12 cm
   • 6 cm
   Check

10. 10. Which is the longest?

    • the radius
    • the circumference
    • the diameter
    Check

11. 11. A circle's diameter is 2.4 m. What is its radius?

    • 2.4 m
    • 4.8 m
    • 0.6 m
    • 1.2 m
    Check

12. 12. A square fits exactly around a circle of radius 5 cm. How long is each side?

    • 10 cm
    • 5 cm
    • 20 cm
    • 25 cm
    Check

13. 13. The circumference is roughly how many times the diameter?

    • exactly 4
    • about 3
    • about 2
    • about 10
    Check

14. 14. A clock's hour hand is 7 cm long, from the centre. Its tip draws a circle with diameter …

    • 3.5 cm
    • 14 cm
    • 21 cm
    • 7 cm
    Check

15. 15. The middle point of a circle is the …

    • edge
    • radius
    • diameter
    • centre
    Check