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27 May, 20:25

A circle has a radius of 7.5 centimeters and a central angle AOB that measures 90°. What is the length of the intercepted arc AB?

A. 11.8 cm

B. 5.9 cm

C. 3.8 cm

D. 1.9 cm

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Answers (1)
  1. 27 May, 20:33
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    Arc length = radius * angle theta (in radians)

    So angle 90 degree = 90*pi/180 radians = pi/2 radians

    So arc length = 7.5 * pi/2 cm = 11.8cm

    So option A is correct.
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