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25 March, 18:43

Find the arc length of a central angle of 90° in a circle whose radius is 4 inches

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  1. 25 March, 20:41
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    This is 1/4 * circumference

    Circumference = 2 * pi * 4 = 8pi

    arc length = 1/4 * 8pi = 2pi or 6.28 ins to nearest hundredth.
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