Question

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

r=2πC
r=2πC

r=Cπ
r is equal to cap c over pi

r=C2π
r is equal to cap c over 2 pi

r=Cπ2

Answer 1

To rearrange the formula for the circumference of a circle \( C = 2\pi r \) to solve for the radius \( r \), you can follow these steps:

1. Divide both sides by \( 2\pi \):
\[
r = \frac{C}{2\pi}
\]

Therefore, the correct rearranged formula to find the radius \( r \) in terms of circumference \( C \) is:
\[
r = \frac{C}{2\pi}
\]

From your provided responses, the correct answer is:
**r = C / (2π)** (equivalent to "r is equal to cap c over 2 pi").