# Aquarium

Try to estimate the weight of the water in an aquarium 50cm long 30cm wide, when poured to a height of 25cm. Calculates the weight of the aquarium's water.

Result

m =  37.5 kg

#### Solution:

$a=50 \ \text{cm} \ \\ b=30 \ \text{cm} \ \\ c=25 \ \text{cm} \ \\ \ \\ V=a \cdot \ b \cdot \ c=50 \cdot \ 30 \cdot \ 25=37500 \ \text{cm}^3 \ \\ V_{1}=V \rightarrow l=V / 1000 \ l=37.5 \ l \ \\ \ \\ ρ=1 \ \text{kg/l} \ \\ \ \\ m=ρ \cdot \ V_{1}=1 \cdot \ 37.5=\dfrac{ 75 }{ 2 }=37.5 \ \text{kg}$

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