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

asked Jan 14, 2016 99.2k views

1 vote

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

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7 votes

Answer:

The correct answer is C= pi d

Explanation:

I just got it correct

Vijay Mohan answered Jan 15, 2016

8.8k points

3 votes

Answer: C=πd

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

Dmazzoni answered Jan 19, 2016

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