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OpenStudy (anonymous):
How long is the arc subtended by an angle of 9π/5 radians on a circle of radius 30 cm?
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OpenStudy (anonymous):
A) 9π B) 27π Eliminate C) 54π D) 108π
OpenStudy (anonymous):
forget the eliminate thing
OpenStudy (wolf1728):
arc length = radius * (central angle in radians) arc length = 30 * 9/5 * PI 169.6460032938 cm Here's a calculator to check your work: http://www.1728.org/radians.htm
OpenStudy (wolf1728):
Oh and the multiple choice answer is C) 54 PI
OpenStudy (anonymous):
Thank you!!
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