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### 2002-D: Circle Math 1

• Topic Cluster: Pure Mathematics
• Topic: Geometry
• Objective: Solve numeric problems with one step relating elements of a circle, such as radius, diameter, area, and circumference
• Content:
• Level: 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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