If r is the radius of a circle and d is its diameter, which of the following is an equivalent formula for the circumference C =

Question

Anettt [7]

3 years ago

13

If r is the radius of a circle and d is its diameter, which of the following is an equivalent formula for the circumference C =

2r?

Mathematics

2 answers:

Illusion [34] · Answer 1 · 2022-03-31T10:33:02+03:00

Illusion [34]3 years ago

8 0

<span>c=2*pi*r
2r=d
so
c=pi*d
</span>I hope this clarifies everything.

Zepler [3.9K] · Answer 2 · 2022-03-31T12:43:21+03:00

The answer is B. C=πD
The answer is indeed B but let me give you the procedure so that you know why is it that:
c=2*pi*r
2r=d
so
c=pi*d
I hope this clarifies everything.
I think this was the question
If r is the radius of a circle and d is its diameter, which of the following is an equivalent formula for the circumference C=2πr?

A. C=2πd
B. C=πD
C. C=πr2
D. C=πdr