Question

Given the formula for the circumference of a circle, C=2πr
𝐶
=
2
𝜋
𝑟
, how would you rearrange the formula if you were interested in finding the radius of the circle? (1 point)
Responses

r=C2π
𝑟
=
𝐶
2
𝜋
r equals Start Fraction upper C over 2 pi End Fraction

r=2πC
𝑟
=
2
𝜋
𝐶
r equals 2 pi upper C

r=Cπ2
𝑟
=
𝐶
𝜋
2
r equals Start Fraction upper C pi over 2 End Fraction

r=Cπ

Answer 1

To find the radius \( r \) given the formula for the circumference \( C = 2\pi r \), you can rearrange the equation as follows:

1. Start with the original equation:
\[ C = 2\pi r \]

2. To solve for \( r \), divide both sides by \( 2\pi \):
\[ r = \frac{C}{2\pi} \]

Thus, the correct response is:

\[ r = \frac{C}{2\pi} \]

So the answer is:
**r = C / (2π)**.