Basement 3

A new construction of a family house is to have a basement. The floor, walls, and ceiling of the basement are to be covered with an asphalt insulating layer. The ground plan of the family house has dimensions of 10m and 12m. The height of the basement including the thickness of the floor and ceiling is 3m. 1m square of insulating layer costs CZK 320. How many crowns will it cost to insulate the basement?

Correct answer:

x =  119040 Kc

Step-by-step explanation:

$$\begin{gathered} a=10\text{m} \\ b=12\text{m} \\ c=3\text{m} \\ S=2\cdot a\cdot b+2\cdot c\cdot (a+b)=2\cdot 10\cdot 12+2\cdot 3\cdot (10+12)=372{\text{m}}^2 \\ x=320\cdot S=320\cdot 372=119040\text{Kc} \end{gathered}$$

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