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Area = pi * r² ; and Circumference = pi * 2 * r. So Area = pi * 10 = pi * r². Divide both sides by pi:

  • r² = 10 --> r = √10
  • Circumference = pi * 2 * √10
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12y ago
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4y ago

2pi^10

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Q: What is the circumference of a circle whose area is 10 pi?
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