Question

question
the radius of a circle is 3.5 ft. 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 into the formula

Given \(r = 3.5\) ft, substitute into \(C = 2\pi r\). So \(C=2\times\pi\times3.5\).

Step3: Calculate the value

\(C = 7\pi\). Using \(\pi\approx3.14\), then \(C\approx7\times3.14 = 21.98\).

Step4: Round to the nearest whole number

Rounding \(21.98\) to the nearest whole number. Since the decimal part \(0.98>0.5\), we round up.

Answer:

\(22\)