One-tenth 24421

Zdenka wants to tile her new bathroom. The bathroom has a square shape with a side length of 2.5 m. How many euros will he pay for new paving if 1 m² of paving costs 12 euros? But do you have to account for one-tenth of the tiling waste that needs to be bought in addition?

Correct answer:

x =  82.5 Eur

Step-by-step explanation:

$$\begin{gathered} a=2.5\text{m} \\ c=12{\text{eur/m}}^2 \\ S=a^2=2.5^2=\frac{25}{4}=6.25{\text{m}}^2 \\ q=1+1/10=\frac{11}{10}=1.1 \\ x=c\cdot q\cdot S=12\cdot 1.1\cdot 6.25=82.5\text{Eur} \end{gathered}$$

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