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9 December, 19:08

In the diagram shown, m
arc ABC?

(1) 20.6

(2) 21.6

(3) 40.4

(4) 41.2

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Answers (1)
  1. 9 December, 19:11
    0
    (2) 21.6

    Step-by-step explanation:

    The segment OA is the radius of the circle

    The arc of the complete circle is equivalent to its perimeter

    perimeter = 2*π*radius = 2*π*10 = 62.83 cm

    This arc is proportional to 360°. So, for 124°:

    360°/124° = 62.83 cm / x cm

    x = 124*62.83/360

    x = 21.6 cm
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