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19 February, 17:01

The circumference of the circle in the above figure is 128 ft. What is the length of AB? A. 16 ft

B. 105.5 ft

C. 22.5 ft

D. 45 ft

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  1. 19 February, 19:38
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    Set up a proportion: Central Angle/360 = arc length / circumference where the central angle = 45 and circumference = 128 ft. After you cross multiply, you should find that the answer is 16ft which is A.
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