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The radius of a circle is 9. Using π, which equation expresses the ratio of the circumference of the circle to the circle's diameter? A) C /9 = π B) C /18 = π C) C = 9π/r D) C = r /18π

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Answer:

A random answer

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it's been a few years, shouldn't matter anymore.

Answer:

The answer is C.

Step-by-step explanation: