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Circumference = diameter * pi

20 = diameter * pi

20/pi = diameter

(20/pi)/2 = radius

10/pi = radius

Area = (radius)2 * pi

Area = (10/pi)2 * pi

Area = 100/pi2 * pi

Area = 100/pi

Area ≈ 31.83 square units

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13y ago

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Q: What is the area of a circle if its circumference is 20?
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