Question

the diameter of a circle is 40 m. find the circumference to the nearest whole number.

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 given diameter.

Given $d = 40$ m, so $C=\pi\times40$.

Step3: Calculate the value.

Taking $\pi\approx3.14$, we have $C\approx3.14\times40 = 125.6$ m.

Step4: Round to the nearest whole number.

Rounding $125.6$ to the nearest whole number gives $126$ m.

Answer:

$126$ m