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OpenStudy (anonymous):
The formula for the circumference C of a circle with radius r is C = 2πr. Which of the following is a formula for π (pi) of the circle in terms of the circumference and radius? (╥ = pi) ╥ = c + 2r ╥ = c - 2r ╥ = 2r/c ╥ = c/2r
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OpenStudy (anonymous):
pi = C/2r
OpenStudy (anonymous):
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