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16 October, 06:16

The length of an arc of a circle is equal to 1/5 of

the circumference of the circle. If the length of

the arc is 2π, the radius of the circle is

+2
Answers (2)
  1. 16 October, 09:25
    0
    Length of arc = 2π

    circumference of circle = 5. 2π = 10π since the arc is 1/5 of the circumference

    C = 2πr

    r = C/2π = 10π/2π = 5
  2. 16 October, 09:26
    0
    2π = 2π * r / 5 = > 1 = r / 5 = > r = 5.
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