# 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} = r^{2}

**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

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