Geometry

Question Analysis

This question pertains to circles. The core task is to determine the radius, which involves applying the distance formula between the given center point and a point on the circle.

 

Key Concept Explanation

The radius  of a circle is the distance from its center  to any point  on the circumference. The distance formula  is used to calculate this distance.

 

Step - by - Step Solution

1. Identify the coordinates:

Let  (center) and  (point on circle).

2. Substitute into the distance formula:

Calculate