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?

Answer 1

To rearrange the formula to find the radius of the circle, we can divide both sides of the equation by 2π:

C = 2πr
C ÷ 2π = 2πr ÷ 2π
C ÷ 2π = r

Therefore, the formula to find the radius of the circle would be:
r = C ÷ 2π