SOLUTION: what is the ratio of circumference of a circle to its radius?

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Question 1120010: what is the ratio of circumference of a circle to its radius?
Found 2 solutions by Alan3354, josgarithmetic:
Answer by Alan3354(69443) About Me  (Show Source):
Answer by josgarithmetic(39616) About Me  (Show Source):
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Basic idea you find in your general arithmetic book or your geometry book