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

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

2. To isolate \( r \), divide both sides of the equation by \( 2\pi \): \[ r = \frac{C}{2\pi} \]

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