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How many liters of water fit into the shape of a cylinder with a bottom diameter 20 cm and a height 45 cm?

Correct answer:

x =  14.1372 l

Step-by-step explanation:

$$\begin{gathered} D=20\text{ cm}\to \text{ dm}=20\mathrm{/}10\text{ dm}=2\text{ dm } \\ r=D\mathrm{/}2=2\mathrm{/}2=1\text{ dm } \\ h=45\text{ cm}\to \text{ dm}=45\mathrm{/}10\text{ dm}=4.5\text{ dm } \\ x=\pi \cdot r^2\cdot h=3.1416\cdot 1^2\cdot 4.5=14.1372\text{ l} \end{gathered}$$

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