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29 September, 05:03

Circle o has a circumference of 36π cm. what is the length of the radius, r?

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  1. 29 September, 05:15
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    Since we know that:

    C = 2πr

    (With C = 36π; Substitute in to the equation)

    36π = 2πr (dividing both sides by 2π)

    r = 18 cm
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