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15 November, 22:47

If the area of a circle is 154m2 what is the circumference.

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  1. 15 November, 22:59
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    The radius is found from

    ... A = πr²

    ... r = √ (A/π) = √ (154/π) m ≈ 7.00 m

    The circumference is then

    ... C = 2πr = 2π (7.00 m) ≈ 43.99 m

    The circumference is about 44.0 m.
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