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21 November, 10:12

A sector with an area of 11/2 pie cm has radius of 3 cm what is the central angle measure of a sector in degrees

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  1. 21 November, 10:28
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    A = 1/360 m•pi r^2

    11/2 = 1/360 m• pi (3) ^2

    11/2 = 1/360 m• pi • 9

    Divide 360 by 9

    11/2 = 1/40 m pi

    Cross multiply

    440=2pi m

    Divide both sides by 2pi

    m = 70.02817 degrees round if necessary
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