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27 August, 09:54

What part of the circumference is an arc whose measure is 30

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Answers (2)
  1. 27 August, 10:07
    0
    Circumference of a circle:

    C = 2 r π;

    Length of an arc:

    L = r π α / 180°

    L = r π · 30° / 180° = r π / 6

    r π / 6 : 2 r π = 1/6 : 2 = 1/12

    = 1/2
  2. 27 August, 10:09
    0
    The answer is one half
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