SOLUTION: In the circle, central angle AOB measures 45 degrees the arc is AB 3.14 cm long. How many cm is the radius?

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Question 737060: In the circle, central angle AOB measures 45 degrees the arc is AB 3.14 cm long. How many cm is the radius?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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In the circle, central angle AOB measures 45 degrees the arc is AB 3.14 cm long. How many cm is the radius?
:
Find the circumference
360%2F45 * 3.14 = 25.12 cm
Find the radius
2%2Api%2Ar = 25.12
r = 25.12%2F%282%2Api%29
r = 3.998 ~ 4 cm is the radius