Question

the diameter of a circle is 123 cm. find the circumference to the nearest whole number. answer attempt 1 out of 2 c = cm

Explanation:

Step1: Recall the formula for circumference

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

Step2: Substitute the value of diameter

Given \(d = 123\) cm. Substitute into the formula: \(C=\pi\times123\).
Using \(\pi\approx3.14159\), then \(C = 3.14159\times123\).

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Step3: Round to the nearest whole number

Since \(0.41557<0.5\), rounding \(386.41557\) to the nearest whole number gives \(386\).

Answer:

\(386\)