Find the area of the circular park, whose circumference is $22 m$.

The circular park's circumference is = $22 m$.
We are aware that the circle's circumference= $2\mathrm{\pi r}$.
Therefore,
$2\mathrm{\pi r}=22$
$r=\frac{7}{2}m$
Area of the circle = ${\mathrm{\pi r}}^2$
= $\mathrm{\pi }\times {\left(\frac{7}{2}\right)}^2$
= $\frac{22}{7}\times \frac{49}{4}$
= $\frac{77}{2}{m}^2$