Answer:
8π in
Step-by-step explanation:
The arc length is calculated as
WX = circumference of circle × fraction of circle
= 2πr × [tex]\frac{160}{360}[/tex]
= 2π × 9 × [tex]\frac{16}{36}[/tex]
= 18π × [tex]\frac{4}{9}[/tex]
= 8π
