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23 September, 23:36

The circumference of a circle is 11π (11 pi) inches.

What is the area, in square inches, of the circle. Express your answer in terms of pi.

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  1. 23 September, 23:50
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    C=2 x pi x r

    11pi=2pi x r

    11pi/2pi=2pi/2pi x r

    r=11/2

    A = pi x r^2

    A = pi x (11/2) ^2

    A=121/4pi inches^2
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