Geometry

Question Analysis

The main focus is on determining the radius of the circle. We can use the distance between the center of the circle and a point on its circumference. This requires identifying the center and a circumference point from the graph and applying the distance formula.

Key Concept Explanation

The radius of a circle is the distance from the center of the circle to any point on its circumference. The distance formula between two points  and  is .

Step - by - Step Solution

1. Identify the center and a point on the circumference:

Assume the center of the circle is at  (by observing the graph). A point on the circumference, for example, could be .

2. Calculate the radius using the distance formula:

Here,

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