Water reservoir

The water tank has a cuboid with edges a= 1 m, b=2 m , c = 1 m. Calculate how many centimeters of water level falls, if we fill fifteen 12 liters cans.

Correct answer:

x =  0.9 dm

Step-by-step explanation:

$$\begin{gathered} a=1\cdot 10=10 \\ b=2\cdot 10=20 \\ c=1\cdot 10=10 \\ {V}_1=15\cdot 12=180 \\ S=a\cdot b=10\cdot 20=200 \\ x=V_1\mathrm{/}S=180\mathrm{/}200={\displaystyle \frac{9}{10}}={\displaystyle \frac{9}{10}}\text{ dm}=0.9\text{ dm} \end{gathered}$$

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