The formula to calculate the circumference of a circle is:
[tex]C=2\pi r[/tex]
where r is the radius.
From the question, we have the radius to be:
[tex]r=3\frac{1}{9}[/tex]
In improper fraction, the radius will be:
[tex]r=\frac{28}{9}[/tex]
Therefore, the circumference of the circle is calculated to be:
[tex]C=2\times\frac{22}{7}\times\frac{28}{9}=\frac{176}{9}[/tex]
In mixed fraction, the circumference will be:
[tex]C=19\frac{5}{9}\text{ yd}[/tex]
