A restaurant hall is long, wide, and high. The interior of the hall except the ceiling and the base has to be covered with bright wallpaper.
What will be the total expenditure if the wallpaper costs per square meter?
Total cost to cover the walls
1) Only the walls of the rectangular hall are included when you covered it with the wallpaper, So;
The area of the hall to be covered
2) Rate of covering the wall is
Total expenditure Area × rate
The total cost to cover the walls is .