Question

Find the circumference of a circle with a diameter of meters. Use as an approximation for . Round your answer to the nearest whole meter. Enter only the number.

Answer 1

The circumference of a circle is expressed as

`\begin{gathered} circumference=\pi* d \\ where\text{ d}\Rightarrow diameter\text{ of the circle} \end{gathered}`

Given that the diameter of the circle is 13 meters, we have

`d=13`

By substitution, we have

`\begin{gathered} circmference=\pi*13 \\ where\text{ }\pi=3.14 \\ thus, \\ circumference=3.14*13 \\ =40.82 \\ \therefore \\ circumference\approx41\text{ meters} \end{gathered}`

Hence, the circumference of the circle, to the nearest meter, is

`41`