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Circle Quiz


Remember: pi = 3.14, C = (pi)D and A = (pi)r2
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1: What the area of a circle that has a diameter of 20 inches?
3.14 sq. inches
31.40 sq. inches
314 sq. inches
None of the above
2: What is the circumference of a circle with a diameter of 4 feet?
50.24 feet
12.56 feet
5.28 feet
None of the above
3: What is the circumference of a circle with a radius of 5 cm?
5 cm
15.7 cm
78.5 cm
None of the above
4: What is the area of a circle with a radius of 1 mile?
3.14 sq. miles
31.4 sq. miles
314 sq. miles
None of the above

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