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)

Question

Responses

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

r=2πC
r equals 2 pi upper C

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

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 would isolate \( r \) on one side of the equation.

Starting with: \[ C = 2\pi r \]

You can divide both sides by \( 2\pi \): \[ r = \frac{C}{2\pi} \]

So the correct response is: r equals Start Fraction upper C over 2 pi End Fraction.