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 equals 2 pi upper C

r=Cπ/2
r equals Start Fraction upper C pi over 2 End Fraction

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

r=C/π

Answer 1

To find the radius \( r \) from the formula for the circumference \( C = 2\pi r \), you need to rearrange the equation:

1. Start with the original equation:
\( C = 2\pi r \)

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

Therefore, the correct rearranged formula to find the radius \( r \) is:

**r = C / 2π**

So the correct response is:
**r = C/2π**