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OpenStudy (hihi):
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? A. PI=C+2r B: C-2r C: PI=2R/C D: PI/C/2R
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OpenStudy (anonymous):
\[C=2\pi*r\] Solve for \[\pi\] \[\pi=C/(2r)\] Choice D
jhonyy9 (jhonyy9):
D. is right
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