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29-05-2018
Mathematics

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Question 27 a circle has a radius of 12in . find the length s of the arc intercepted by a central angle of 89° .

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29-05-2018

Circumference of the circle = 2pi r = 2pi * 12 = 24pi

By proportion the length s of the arc = 24 pi * 89 / 360 = 18,64 inches

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