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13 April, 21:22

What is the radius of a circle in which a 30 degrees arc is 2 inches long

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  1. 13 April, 21:27
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    arc length = pi / 180 * angle in degree * radius

    2 = pi/180 * 30 * r

    2 = pi/6 * r

    multiply by 6/pi

    12/pi = r

    3.819718634 = r

    Answer: r = 3.82 inches
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