Question

Calculate the cost of wallpaper for a wall with a wall area of 4.2m^2 and a wall length of 1.5mone wall with a length of 4m has a wall area of 11.2m^2the wallpaper costs 20eur per 8m^2

Answer 1

`77\text{ eur}`

Step-by-step 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:

`2(4.2)\text{ + 2\lparen11.2\rparen= 30.8 m}^2`

From the question, we can calculate the cost per m^2

We have that as:

`\frac{20\text{ eur}}{8\text{ m}^2}\text{ = 2.5 eur per m}^2`

Now, the cost of the total wall area will be:

`30.8\text{ }*\text{ 2.5 = 77 eur}`