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29 July, 10:49

A circle has a radius of 12.6 cm.

What is the exact length of an arc formed by a central angle measuring 120°?

Enter your answer in the box. Express your answer using π.

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  1. 29 July, 12:39
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    Circle circumference = 12.6 cm * 2 * PI

    Circle circumference = 25.2 cm * PI

    a 120 degree arc would be (1/3) of the circumference

    120 degree arc = (25.2 / 3) cm * PI

    120 degree arc = 8.4 PI centimeters
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