Answer:
2.2 ft ( to 1 dec. place )
Step-by-step explanation:
The arc length is calculated as
arc = circumference × fraction of circle
= 2πr × [tex]\frac{18}{360}[/tex]
= 2π × 7 × [tex]\frac{1}{20}[/tex]
= 14π × [tex]\frac{1}{20}[/tex]
= [tex]\frac{14\pi }{20}[/tex] ≈ 2.2 ft
