- 1. A circle has a radius of 20 cm, using 3.14 as the value of Pi what is the circle's circumference?
A) 6.37 cm
B) 23.14 cm
C) 125.6 cm
D) 62.8 cm
- 2. A circle has a radius of 15 m, using 3.14 as the value of Pi what is the circle's circumference?
A) 94.2 m
B) 47.1 m
C) 18.14 m
D) 4.78 m
- 3. A circle has a radius of 8.6 mm, using 3.14 as the value of Pi what is the circle's circumference?
A) 2.74 mm
B) 11.74 mm
C) 54.008 mm
D) 27.004 mm
- 4. A circle has a diameter of 9.8 cm, using 3.14 as the value of Pi what is the circle's circumference?
A) 3.12 cm
B) 30.772 cm
C) 12.94 cm
D) 15.386 cm
- 5. A circle has a diameter of 10 km, using 3.14 as the value of Pi what is the circle's circumference?
A) 31.4 km
B) 3.18 km
C) 62.8 km
D) 13.14 km
- 6. A circle has a diameter of 11.2 mm, using 3.14 as the value of Pi what is the circle's circumference?
A) 70.336 mm
B) 35.168 mm
C) 3.57 mm
D) 17.584 mm
- 7. A circle has a radius of 5.4 cm, using 3.14 as the value of Pi what is the circle's circumference?
A) 16.956 cm
B) 8.478 cm
C) 33.912 cm
D) 8.54 cm
- 8. A circle has a circumference of 65.94 m, what is it's diameter?
A) 103.53 m
B) 207.05 m
C) 10.5 m
D) 21 m
- 9. A circle has a circumference of 20.724 km , what is it's diameter?
A) 65.07 km
B) 3.3 km
C) 32.54 km
D) 6.6 km
- 10. A circle has a circumference of 15.7 m, what is it's radius?
A) 2.5 m
B) 49.298 m
C) 24.649 m
D) 5 m
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