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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? A.π=C+2r B.π=C-2r C.π=2r/C D.π=C/2r
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OpenStudy (anonymous):
to isolate pi, divide both sides by 2 and r
OpenStudy (anonymous):
ok thanks for the help :)
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