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2002-D: Circle Math 1

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2002-D: Circle Math 1

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For full credit, write every equation before you use it. Please give all answers to three significant figures of accuracy.

  1. If a circle has a circumference of 500 meters, what is its diameter?
  2. If a circle has a circumference of 20 meters, what is its diameter?
  3. If a circle has a circumference of 10 meters, what is its radius?
  4. If a circle has a circumference of 50 meters, what is its radius?
  5. If a circle has a diameter of 60 meters, what is its circumference?
  6. If a circle has a diameter of 90 meters, what is its circumference?
  7. If a circle has a radius of 5 meters, what is its circumference?
  8. If a circle has a radius of 9 meters, what is its circumference?
  9. If a circle has a radius of 6 meters, what is its area?
  10. If a circle has a radius of 17 meters, what is its area?
  11. If a circle has a diameter of 23 meters, what is its area?
  12. If a circle has diameter of 39 meters, what is its area?
  13. If a circle has a circumference of 40 meters, what is its area?
  14. If a circle has a circumference of 3 meters, what is its area?
  15. Write pi to 10 digits.
  16. The average speed of the moon rover rover vehicle is _____. The radius of the moon is _____. How long would it take the vehicle to drive the entire circumference of the moon?

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