Collect rain water

The garden water tank has a cylindrical shape with a diameter of 80 cm and a height of 12 dm. How many liters of water will fit into the tank?

Correct answer:

V =  603.2 l

Step-by-step explanation:

$$\begin{gathered} D=80\text{ cm}\to \text{ dm}=80\mathrm{/}10\text{ dm}=8\text{ dm } \\ h=12\text{ dm } \\ r=D\mathrm{/}2=8\mathrm{/}2=4\text{ dm } \\ V=\pi \cdot r^2\cdot h=3.1416\cdot 4^2\cdot 12=603.2\text{ l} \end{gathered}$$

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