Perimeter of Circle Quiz

Calculate the perimeter of a circle (circumference) if the:

1. Radius = 10 cm
A 31.4 cm
B 62.8 cm
C 13.14 m

2. Radius = 5 m
A 15.7 m
B 8.14 cm
C 31.4 m

3. Radius = 4 cm
A 25.12 cm
B 7.14 m
C 12.56 cm

4. Radius = 2 km
A 12560 m
B 12.56 mm
C 6.28 m

5. Radius = 2.5 m
A 5.64 m
B 7.85 m
C 15.7 m

6. Diameter = 10 m
A 13.14 m
B 31.4 m
C 62.8 m

7. Diameter = 12 cm
A 75.36 cm
B 37.68 cm
C 18.84 cm

8. Diameter = 8 cm
A 25.12 cm
B 12.56 m
C 11.14 cm

9. Diameter = 9 m
A28.26 m
B14.13 m
C14.13 cm

10. Diameter = 2.5 cm
A7.85 km
B78.5 mm
C5.64 cm

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