Question

a circular mirror has a radius of 4 inches. what is the circumference of this mirror? a 2π inches b 4π inches c 8π inches d 16π inches

Explanation:

Step1: Recall the formula for circumference

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

Step2: Substitute the given radius

Given \(r = 4\) inches. Substitute into the formula: \(C=2\pi\times4\).

Step3: Calculate the result

\(C = 8\pi\) inches.

Answer:

C. \(8\pi\) inches