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26 January, 02:39

What is the degree measure of an arc 4 pi feet long in a circle radius of a 10 foot radius

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  1. 26 January, 05:01
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    Circumference = 2 pi r = 20 pi

    corresponding to 360 degrees

    so an arc of 4pi feet will have a degree measure of 5pi / 20pi * 360 = 1/4 * 360 = 90 degrees
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