Step 1
The circumference of a circle is given by;
[tex]2\pi r[/tex]
where;
[tex]\begin{gathered} r=9in \\ \end{gathered}[/tex]
Step 2
Find the circumference
[tex]\begin{gathered} C=2\times\pi\times9 \\ C=18\pi in\text{ches} \end{gathered}[/tex]
Hence, in terms of π the circumference of the circle=18πinches
