Question

the radius of a circle is 3.6 in. find the circumference to the nearest whole number.

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 \(r=3.6\) in, so \(C = 2\times\pi\times3.6\).

Step3: Calculate the value

\(C=7.2\pi\approx7.2\times3.14 = 22.608\).

Step4: Round to the nearest whole number

Rounding \(22.608\) to the nearest whole number. Since the decimal part \(0.608\gt0.5\), we round up.

Answer:

\(23\)