What is the radius of a circle with a circumference of 37.7 m?

Question

the formula for the circumference of a circle is C=2 pie r, where r is the radius of the circle. What is the radius of a circle with a circumference of 37.7 m? Round to the nearest tenth if necessary.

Answer 1

C = 37.7 cm, given.   C = 2('pi')(radius), formula.   'pi' is about 3.1416

 

Now, note that we can modify our formula to solve for radius = C/(2pi)

 

2pi is about 6.2832, so divide 37.7 by 6.2832, and round as directed to present the final answer.

 

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