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9 June, 05:28

The radius of a circle is (7n-21) inches find circumference of the circle in terms of n.

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  1. 9 June, 05:44
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    (14n - 42) * pi

    Step-by-step explanation:

    Circumference is 2 * pi * r. Since r in this case is 7n - 21, you can multiply r by 2 and pi, giving you (14n - 42) * pi
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