Answer:
The radius of the circle is 7.21 units and option C is correct.
Step-by-step explanation:
It is given that center of the circle is at (1, 2) and the point (-5, 6) lies on the circle.
We need to find the radius of the circle. It means we have to o find the distance between (1,2) and (-5,6).
Using distance formula, we get







Therefore the radius of the circle is 7.21 units and option C is correct.