Circumference Review
 1. A circle has a radius of 20 cm, using 3.14 as the value of Pi what is the circle's circumference?A) 125.6 cmB) 23.14 cmC) 62.8 cmD) 6.37 cm2. A circle has a radius of 15 m, using 3.14 as the value of Pi what is the circle's circumference?A) 4.78 mB) 47.1 mC) 18.14 mD) 94.2 m3. A circle has a radius of 8.6 ft, using 3.14 as the value of Pi what is the circle's circumference?A) 2.74 ftB) 27.004 ftC) 54.008 ftD) 11.74 ft4. 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 cmB) 12.94 cmC) 15.386 cmD) 30.772 cm5. A circle has a diameter of 10 inches, using 3.14 as the value of Pi what is the circle's circumference?A) 13.14 inchesB) 3.18 inchesC) 62.8 inchesD) 31.4 inches6. A circle has a diameter of 11.2 yd, using 3.14 as the value of Pi what is the circle's circumference?A) 3.57 ydB) 70.336 ydC) 17.584 ydD) 35.168 yd7. A circle has a radius of 5.4 cm, using 3.14 as the value of Pi what is the circle's circumference?A) 8.54 cmB) 8.478 cmC) 33.912 cmD) 16.956 cm8. A circle has a circumference of 65.94 m, what is it's diameter?A) 10.5 mB) 21 mC) 207.05 mD) 103.53 m9. A circle has a circumference of 20.724 ft, what is it's diameter?A) 65.07 ftB) 32.54 ftC) 6.6 ftD) 3.3 ft10. A circle has a circumference of 15.7 inches, what is it's radius?A) 24.649 inchesB) 5 inchesC) 2.5 inchesD) 49.298 inches
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