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13 October, 02:59

Arc CD is 2/3 of the circumference of a circle. What is the radian measure of the central angle?

2 (pie) / 3 radians

3 (pie) / 4 radians

4 (pie) / 3 radians

3 (pie) / 2 radians

+4
Answers (2)
  1. 13 October, 04:55
    0
    There are 2*PI radians in every circle.

    If the central angle is 2/3 of the circle, then it equals

    (2/3) * 2*PI = (4/3) PI

    answer is C
  2. 13 October, 06:05
    0
    Easy

    2/3 of circumferenc=2/3 of the total radians in a circle

    2pi radians in a circle

    2pi times 2/3=4pi/3 radians

    answer is 3rd option
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