### Home > PC > Chapter 13 > Lesson 13.1.1 > Problem 13C-15

13C-15.

If the circumference of a circle is 2*πr*, what is the radius of this circle?

(*x* − *h*)^{2} + (*y* − *k*)^{2} = *r*^{2}

13C-15.

If the circumference of a circle is 2*πr*, what is the radius of this circle?

(*x* − *h*)^{2} + (*y* − *k*)^{2} = *r*^{2}