Question

(13) what is the length of the radius of this circle?

Explanation:

Step1: Determine the diameter

From the graph, the diameter of the circle is from \(x = 2\) to \(x = 8\) (assuming the center is at \(x = 5\)). The length of the diameter \(d=8 - 2=6\).

Step2: Calculate the radius

The formula for the radius \(r\) of a circle is \(r=\frac{d}{2}\). Substituting \(d = 6\) into the formula, we get \(r=\frac{6}{2}=3\).

Answer:

\(3\)