Question

the diameter of a circle is 9 m. find its circumference in terms of π.

Explanation:

Step1: Recall the formula for circumference

The formula for the circumference \(C\) of a circle is \(C=\pi d\) (where \(d\) is the diameter).

Step2: Substitute the given diameter

Given \(d = 9\) m. Substitute \(d=9\) into the formula \(C=\pi d\). So \(C=\pi\times9\).

Answer:

\(9\pi\) m