Question

the diameter is cm.

Explanation:

Step1: Recall diameter - radius relationship

The diameter $d$ of a circle is twice the radius $r$, i.e., $d = 2r$.

Step2: Identify the radius

From the image, the radius $r=5$ cm.

Step3: Calculate the diameter

Substitute $r = 5$ into the formula $d = 2r$, so $d=2\times5=10$ cm.

Answer:

10