Answer:
88 ft.
Step-by-step explanation:
- Find The Area Of The Whole Wall (Including The Door)
 - Area = Width · Length
 
12 Ft. (Width) · 9 Ft. (Length)
= 108 Ft.
- Find The Area Of The Door
 
2.5 Ft. (Width) · 8 Ft. (Length)
= 20 Ft.
- Subtract The Area Of The Door From The Area Of The Wall
 
108 Ft. - 20 Ft.
= 88 Ft.
88 ft Needs Wallpaper
- PNW