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27 September, 11:08

A circle has a sector of 64/5pi and it has a angle of 8/5pi radians, what is the area of the circle?

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  1. 27 September, 13:36
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    Sector angle is 8/5pi and it is 2pi for the full circle

    so setting up the ratio

    2pi : 8/5pi = total area : 64/5pi

    total area = 64/5pi * 2pi / (8/5) pi

    = 16pi
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