Answer:
399.6 miles²
Step-by-step explanation:
The area (A) of the major sector is
A = area of circle × fraction of circle
= πr² × [tex]\frac{255}{360}[/tex]
= π × 13.4² × [tex]\frac{255}{360}[/tex]
= [tex]\frac{13.4^2(255)\pi }{360}[/tex] ≈ 399.6 miles²
