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The radius of a circle is 3 centimeters. What is the length of a 90° arc?

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Circumference is pye times twice the radius or by the diameter
3.1417 X 6 ( diameter or 2 times the radius )= 18.8496
90 degrees is 1/4 of the circumference
18.8496 divided by 4 = 4.7124 cms
arc of 90 degrees =4.74124 cms

Posted on May 03, 2017

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