The number 3.14 is a rounded value of the mathematical quantity π. If you replace 3.14 with π, what is the exact formula for the circumference in terms of the diameter, d, and in terms of the radius, r?

asked Nov 27, 2018 198k views

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1 vote

Formula in terms of diameter = πd
Formula in terms of radius = 2πr

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C=pi(r)(2)
C=pi(d)
Those are the exact formulas for the circumference.

Hope this helps!

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