Question

the radius of a circle is 13 cm. find its circumference in terms of π.

Explanation:

Step1: Recall the formula for the circumference of a circle

The formula for the circumference \(C\) of a circle is \(C = 2\pi r\), where \(r\) is the radius of the circle.

Step2: Substitute the given radius into the formula

Given \(r = 13\) cm. Substitute \(r = 13\) into \(C = 2\pi r\). So \(C=2\pi\times13\).

Step3: Simplify the expression

\(C = 26\pi\)

Answer:

\(26\pi\) cm