Question

the diameter of a circle is 18 inches. what is the circles circumference? round your answer to the nearest hundredth. inches

Explanation:

Step1: Recall the formula for circumference

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

Step2: Substitute the value of diameter

Given \(d = 18\) inches. Substitute \(d\) into the formula: \(C=\pi\times18\).

Step3: Calculate the value

Using \(\pi\approx3.14159\), we have \(C = 18\times3.14159= 56.54862\).

Step4: Round to the nearest hundredth

Rounding \(56.54862\) to the nearest hundredth (two - decimal places). The third decimal digit is \(8\) (since \(8>5\)), so we round up the second decimal digit. \(56.54862\approx56.55\).

Answer:

\(56.55\)