mathematical and computing sciences question #368



Anonymous, a 13 year old female from the Internet asks on April 15, 1998,

Q:

What is the linear function of a circumference of circle to its diameter? I know the ratio is equal to pi (3.14) but I would like to know its linear function?

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the answer

Jonathan M. Borwein answered on April 15, 1998, A:

Since C = Circumference = 2 Pi times Radius = Pi times Diameter, I imagine the linear function is C(D) = Pi D.

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