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(C) Let the edge of the cube be $x \, m$.Since the volume of the cube is $x^3$,we have $x^3 = 15.625 \, m^3$.Taking the cube root,$x = \sqrt[3]{15.625

Vedclass · Accepted Answer

$7.5$

Vedclass · Answer

(C) Let the edge of the cube be $x \, m$.Since the volume of the cube is $x^3$,we have $x^3 = 15.625 \, m^3$.Taking the cube root,$x = \sqrt[3]{15.625} = 2.5 \, m$.The total capacity of the tank is $15.625 \, m^3$ with a height of $2.5 \, m$.The volume of water currently in the tank with depth $1.3 \, m$ is calculated as: $	ext{Volume} = 	ext{length} 	imes 	ext{width} 	imes 	ext{depth} = 2.5 	imes 2.5 	imes 1.3 = 8.125 \, m^3$.The volume of water already used is the difference between the total capacity and the current volume: $15.625 \, m^3 - 8.125 \, m^3 = 7.5 \, m^3$.

$A$ storage tank is in the form of a cube. When it is full of water,the volume of water is $15.625 \, m^3$. If the present depth of water is $1.3 \, m$,find the volume of water already used from the tank (in $m^3$).

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