Cuboid aquarium

Cuboid 25 times 30 cm. How long is third side if cuboid contains 30 liters of water?

Correct answer:

x =  40 cm

Step-by-step explanation:

$x={\displaystyle \frac{V}{ab}}={\displaystyle \frac{1000\cdot 30}{25\cdot 30}}=40\text{ cm}$

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