Remember that
The circumference of a circle is equal to
[tex]C=\pi\cdot D[/tex]
where
D is the diameter
Solve for pi
[tex]\begin{gathered} C=\pi\cdot D \\ \pi=\frac{C}{D} \end{gathered}[/tex]
substitute given values
[tex]\pi=\frac{18.84}{6}[/tex]
The answer is option C
