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if r is the radius of a circle and d is diameter which is an equivalent formula for the circumference C=2pi r?
C=pid C=pi d2 C=pi rd C= 2pi d



Answer :

Answer: C=πd

This is because d=2r. In other words, the diameter of a circle is double the radius.
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Answer:

The correct answer is C= pi d

Step-by-step explanation:

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