Tank and water

We poured a cylindrical tank with 3.5 liters of water. If the tank base diameter is 3 dm, how height is the water level in?

Correct answer:

x =  0.5 dm

Step-by-step explanation:

$$\begin{gathered} V=\pi r^{2}x=\pi (D\mathrm{/}2{)}^{2}x \\ x={\displaystyle \frac{4V}{\pi D^2}}={\displaystyle \frac{4\cdot 3.5}{\pi 3^2}}=0.5\text{ dm} \end{gathered}$$

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