Question

he diameter of the circle is 18 m. Eugene incorrectly says that the circumference of the circle is about 113.04 m. What is the circumference of the​ circle? What mistake did Eugene ​make? Use 3.14 for pi.

Answer 1

Eugene used the wrong formula to find the circumference of a circle.

He confused the radius with the diameter.

Explanation:

Answer 2

The circumference of the​ circle is
`C=56.55 \:m`.

Eugene confused the radius with the diameter to find the circumference of the circle.

Explanation:

The circumference of a circle is the distance around the outside of the circle.

The circumference of a circle is found using this formula:

`\begin{matrix} C=\pi \cdot d\\or\\ \, C=2\pi \cdot r \end{matrix}`

From the information given the diameter of the circle is 18 m. Therefore, the circumference of the​ circle is

`C=\pi \cdot d\\\\C=3.14 \cdot 18 \approx 56.55 \:m`

Eugene used the wrong formula to find the circumference of a circle.

`C=2\cdot(3.14)\cdot 18=113.04 \:m`

He confused the radius with the diameter.