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OpenStudy (anonymous):
Which of the following statements is true? A. Diameter × pi = circumference B. Circumference × pi = diameter C. Diameter × circumference = pi D. Diameter + pi = circumference
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OpenStudy (anonymous):
A is true because it is the formula to find the circumference
OpenStudy (phi):
This is a very important formula, and worth memorizing. \[ C= 2\pi r \] \[ C= \pi d\] where d is the diameter equal to twice the radius r
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