The circumference (C) of a swimming pool is 47 feet. Which formula can you use to find the radius (r) if you know that C = 2πr?

The correct formula to find the radius (r) from the circumference (C) is:

r = C/2π

### Explanation:

The formula for the circumference of a circle is given as ( C = 2πr ). To find the radius (r), you can rearrange this formula by dividing both sides by ( 2π ):

1. Start with: ( C = 2πr )
2. Divide both sides by ( 2π ):

( r = frac{C}{2π} )

So, the correct option is ( r = C/2π ). If you have more questions or need further assistance, feel free to ask!