Joanne 2

Joanne bought five fish. To have enough space, fish must have at least 30 liters of water. You know that the length is 5 dm and the width is 3 dm. Calculate the minimum height of the aquarium.

Correct answer:

c =  10 dm

Step-by-step explanation:

$$\begin{gathered} V_1=30\text{l}\to {\text{dm}}^3=30\cdot 1{\text{dm}}^3=30{\text{dm}}^3 \\ n=5 \\ {V}_2=n\cdot V_1=5\cdot 30=150{\text{dm}}^3 \\ a=5\text{dm} \\ b=3\text{dm} \\ {V}_2=a\cdot b\cdot c \\ c=\frac{V_2}{a\cdot b}=\frac{150}{5\cdot 3}=10\text{dm} \end{gathered}$$

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