Square-shaped 22513

The square-shaped aquarium is 65 cm long, 24 cm wide, and 30 cm high. How many liters of water are in an aquarium if the water reaches 5 cm below its upper edge?

Correct answer:

V =  39 l

Step-by-step explanation:

$$\begin{gathered} a=65\text{cm}\to \text{dm}=65:10\text{dm}=6.5\text{dm} \\ b=24\text{cm}\to \text{dm}=24:10\text{dm}=2.4\text{dm} \\ c=30\text{cm}\to \text{dm}=30:10\text{dm}=3\text{dm} \\ {c}_1=5\text{cm}\to \text{dm}=5:10\text{dm}=0.5\text{dm} \\ V=a\cdot b\cdot (c-c_1)=6.5\cdot 2.4\cdot (3-0.5)=39\text{l} \end{gathered}$$

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