Answer:
\(14\pi\ cm\)
Step-by-step explanation:
we know that
The formula to calculate the arc length of the circle is equal to
\(arc\ length=r \theta\)
where
\(r\) is the radius
\(\theta\) is the central angle in radians
In this problem we have
\(r=63\ cm\)
\(\theta=\frac{2\pi}{9}\)
substitute the values
\(arc\ length=63(\frac{2\pi}{9})\)
\(arc\ length=14\pi\ cm\)
