# Aquarium 6

How high is the water level in the aquarium with a rectangular base 40cm and 50cm if it is filled 0,65hl of water?

Result

x =  32.5 cm

#### Solution:

$V = 0.65 \cdot \ 100 \cdot \ 10^3 = 65000 \ \\ a = 40 \ \\ b = 50 \ \\ S = a \cdot \ b = 40 \cdot \ 50 = 2000 \ \\ x = V / S = 65000 / 2000 = \dfrac{ 65 }{ 2 } = 32.5 = 32.5 \ \text{ cm }$

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