Question

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, and then find the volume of water already used from the tank?

Answer 1

For full cylibder,
V=15.625m³ let Side=x m
15.625=x³
x³=15625/1000
x³=(25*25*25)/(10*10*10)
x=25/10=2.5 m

For Present cylinder,
Now cube become cuboid with length=x=2.5m,bredth=x=2.5m and depth,h=1.3 m

volume of water used = vol. of full cube - partially empty cube
=15.625-2.5*2.5*1.3
= 15.625 - 8.125=7.5m³

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Answer 2

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