Answer:
radius r and a center at (h,k).
Explanation:
The formula that states that P(x,y) is a distance r > 0 from a fixed point C(h,k) is:
(x - h)^2 + (y - k)^2 = r^2
This equation represents a circle with a center (h,k) and radius r. The set of all points that satisfy this equation is a circle with center (h,k) and radius r. This circle includes all points in the plane that are a distance r from the point (h,k).
The radius of the circle is r, and the center of the circle is (h,k). Therefore, the circle can be described as a circle with a radius r and a center at (h,k).