Answer :
The formula for arc length [tex]S[/tex], radius [tex]r[/tex], and angle [tex]\theta[/tex] is
[tex]S=r\theta[/tex]
So we get
[tex]6\pi=r*\frac{\pi}{3}[/tex]
[tex]\rightarrow\pi r=18\pi[/tex]
[tex]\rightarrow r=18[/tex]
[tex]S=r\theta[/tex]
So we get
[tex]6\pi=r*\frac{\pi}{3}[/tex]
[tex]\rightarrow\pi r=18\pi[/tex]
[tex]\rightarrow r=18[/tex]