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OpenStudy (anonymous):

If measures 135, what is the length of the radius of this circle? Round your answer to two decimal places. CAN SOMEONE HELP !!!PLEASE!!!!

OpenStudy (anonymous):

OpenStudy (phi):

there are a few ways to do this problem. One way is use ratios 135º is to 360º as arc is to circumference they tell you the arc is 9 cm. the circumference is unknown. call it C 135/360 = 9/C solve for C to get a number then use 2 pi r = C replace C with the number you found, and solve for r

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