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Mathematics 9 Online
OpenStudy (anonymous):

A circle has radius 2.5 m. What angle is subtended at the center of the circle by an arc 3 m long? (Round your answer to one decimal place.) They want the answer in degrees. I dont know what I did wrong below: arclength/ circumf of circle = angle/360 deg 3/2pi(2.5) = angle/360 Cross multiplied to get 360(3) = 2(pi)2.5*angle Isolate for angle 1080/5pi = angle 68.7 deg = angle What did I do wrong?

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