Question

the diameter of a circle is 86 m. find the circumference to the nearest whole number.

Explanation:

Step1: Recall the formula for circumference.

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

Step2: Substitute the given diameter.

Given $d = 86$ m, so $C=\pi\times86$.

Step3: Calculate the value.

Taking $\pi\approx3.14$, then $C\approx3.14\times86 = 270.04$ m.

Step4: Round to the nearest whole number.

Rounding $270.04$ to the nearest whole number gives $270$ m.

Answer:

$270$