Dimensions 68074

How high is the water level in the aquarium, which has the dimensions of a base of 80 cm and 45 cm, if there are 72 liters of water in it?

Correct answer:

c =  20 cm

Step-by-step explanation:

$$\begin{gathered} a=80\text{cm} \\ b=45\text{cm} \\ V=72\text{l}\to {\text{cm}}^3=72\cdot 1000{\text{cm}}^3=72000{\text{cm}}^3 \\ V=a\cdot b\cdot c \\ c=\frac{V}{a\cdot b}=\frac{72000}{80\cdot 45}=20\text{cm} \end{gathered}$$

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