How to find the radius of a circle on a graph?

The distance from the center point to any endpoint on the circle is called the radius of a circle

Answer: The radius of the circle on a graph can be measured by finding the distance from the center of the circle to any point on the circle.

Any circle on a graph can be represented by the equation: (x-a)² + (y-b)² = r²

Explanation:

On the graph, find the distance between the point on the circle and the center (a,b) using the distance formula

Hence, the radius of the circle on a graph can be measured by finding the distance from the center of the circle to any point on the circle