Answer:
The radius of the circle is 4.
+
= 16
Explanation:
The Radius:
The radius is found from the points (1,1) the center of the circle and the point (1,5) that is on the circle. The vertical difference is 4 and that tis the radius.
The Equation:
The standard from of the equation for a circle is
+
=
The (h,k) is (1,5) and the radius is 4
+
= 16
Helping in the name of Jesus.