Dimensions 15253

Our office has dimensions of 5 m by 4.5 m and a height of 2.5 m. How much will it cost to paint it if a liter of paint costs €3.50 (yield 10 m²/l) and the painter asks €1.20 for the job and 1m square painting? It will need to be painted twice.

Correct answer:

x =  217 Eur

Step-by-step explanation:

$$\begin{gathered} a=5\text{m} \\ b=4.5\text{m} \\ c=2.5\text{m} \\ n=2 \\ p=3.50/10+1.2=\frac{31}{20}=1.55{\text{Eur/m}}^2 \\ S=a\cdot b+2\cdot (a+b)\cdot c=5\cdot 4.5+2\cdot (5+4.5)\cdot 2.5=70{\text{m}}^2 \\ x=p\cdot n\cdot S=1.55\cdot 2\cdot 70=217\text{Eur} \end{gathered}$$

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