Answer:
D
Step-by-step explanation:
The area (A) of the sector is calculated as
A = area of circle × fraction of circle
= πr² × [tex]\frac{80}{360}[/tex]
= π × 0.9² × [tex]\frac{8}{36}[/tex]
= 0.81π × [tex]\frac{2}{9}[/tex]
= 0.09π × 2
= 0.18π in² → D