Question

The radius of a circle is 9 m what is the circle circumference

Answer 1

To calculate the circumference of a circle using its radius you have to calculate twice its radius multiplied by pi, following the formula:

`C=2\pi r`

The given radius has a radius of r=9m, you can calculate the circumference as:

`\begin{gathered} C=2\pi9 \\ C=(2\cdot9)\pi \\ C=18\pi \\ C\approx56.55m \end{gathered}`

The circumference of the circle is 18π m or aproximatelly 56.55m