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28 February, 13:06

Find the arc length of a sector that is 125° and has a radius of 20 in.

A. 13.9

B. 43.6

C. 872.2

D. 87.2

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Answers (1)
  1. 28 February, 13:23
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    For r = 20 in; α = 125°;

    the arc length is:

    l = (r π α) / 180°

    l = (20 · 3.14 · 125°) / 180°

    l = 7,850 / 180

    l = 43.611 ≈ 43.6

    Answer: B) 43.6 in.
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