Need help please. Thank you

Answer:
1) [tex]\frac{8\pi }{3}[/tex] or 8.38
2) [tex]\frac{9\pi }{8}[/tex] or 3.53
3) 4[tex]\pi[/tex] or 12.57
Step-by-step explanation:
The formula for arc length is [tex]2\pi r(\frac{angle}{360})[/tex]
1) 2[tex]\pi[/tex](4)× [tex]\frac{120}{360}[/tex]
2)[tex]2\pi (1.5)[/tex]×[tex]\frac{135}{360}[/tex]
3) [tex]2\pi(3)[/tex]×[tex]\frac{240}{360}[/tex]