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28 March, 16:49

S denotes the length of the arc of a circle of radius r subtended by the central angle theta. Find the missing quantity. Thetaequalsone fourth radian, sequals3 feet, requals ?

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  1. 28 March, 20:46
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    The appropriate relation is ...

    ... s = rθ

    Filling in the given information, you get ...

    ... 3 ft = r· (1/4)

    Multiply by 4 and you find r:

    ... 12 ft = r
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