Find the circle circumference and circle area with a circles radius 10 inches

I think the circles are is 314 but don't know the circumference.

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asked by Nat
  1. C = pi * d
    C = 3.14 * 20
    C = ?

    You're right about the area -- 314 square inches.

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    posted by Ms. Sue
  2. 62.8

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    posted by Nat
  3. Right.

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    posted by Ms. Sue
  4. 3 in

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  5. a circular mat has a circumstance of 220 centimeters . find the radius rounded to the nearest whole number.

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    posted by jasmine

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