The wall

The wall in the bathroom has dimensions of 2.8 m and 2.6 m. If we would like to cover this wall to a height of 1.6 m. How many square meters of tiles do we need to buy?

Correct answer:

S =  24.56 m²

Step-by-step explanation:

$$\begin{gathered} a=2.8\text{ m } \\ b=2.6\text{ m } \\ c=1.6\text{ m } \\ o=2\cdot (a+b)=2\cdot (2.8+2.6)={\displaystyle \frac{54}{5}}=10.8\text{ m } \\ S=a\cdot b+c\cdot o=2.8\cdot 2.6+1.6\cdot 10.8=24.56{\text{m}}^2 \end{gathered}$$

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