Find the distance between the center of a circle to the line of the circle

Question

(x-2)² + (y+5)² = 9

Answer 1

3 if you mean by "line of the circle" the circle's curved line

(x-2)^2 + (y+5)^2 = r^2 = 9 = 3^2 3 is the radius, the distance from the center (2,-5) to a point on the circle

Answer 2

Where is the tangent line?