Answer:
[tex]77\text{ eur}[/tex]
Explanation:
Here, we want to get the cost of the wallpaper
Firstly, a room is expected to have 4 walls
The walls will be 2 of a kind
Thus, we will have 2 walls with a length of 1.5 m and the same area, then 2 walls with a length of 4 m and an area of 11.2 m^2
We have the total wall area of the room as:
[tex]2(4.2)\text{ + 2\lparen11.2\rparen= 30.8 m}^2[/tex]
From the question, we can calculate the cost per m^2
We have that as:
[tex]\frac{20\text{ eur}}{8\text{ m}^2}\text{ = 2.5 eur per m}^2[/tex]
Now, the cost of the total wall area will be:
[tex]30.8\text{ }\times\text{ 2.5 = 77 eur}[/tex]
