Question

Please explain the answer to the above question in detail.
(As much detail as u can)

Pls don’t give irrelevant answer
It’s important ...pls

Also pls tell that why do we have to take the volume of cuboid in the end when it is a cube ?

Answer 1

Answer:

Just consider that it's a magical cube vessel which wherever emptied by certain amount it automatically takes the shape such that vessel is always filled.

Answer 2

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Suggestion - I suggest you to please check the answer on Brainly website.

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Answer :-

• The volume of water already used from the tank = 7500 L or 7.5 m³

Given :-

• Volume of water when tank is full = 15.625 m³
• Present depth of water = 1.3 m

To Find :-

• The volume of water already used from the tank.

Explanation :-

Let the side of the cubic tank to be 'x' m.

As we know, Volume of cube = (side)³

$\therefore \rm \text { Volume of cubical tank} = 15.625 \: m^3 \qquad \bold {[Given]}$

$\implies \rm x^3 = 15.625 \: m^3$

$\implies \rm x = \sqrt[3]{15.625}$

$\boxed {\implies \rm \bold { x = 2.5 \: m}}$

$\therefore \rm \text {Present depth of water in cubical tank} = 1.3 \: m$

$\therefore \rm \text { Height of water used } =2.5 - 1.3 \: m = \bold {1.2\: m}$

Now,

$\implies \text {Volume of water used} = 1.2 \times 2.5 \times 2.5= 7.5 \: m^3$

$\boxed { \implies { \bold {Volume \: of \: water\: used = 7.5 \: m^3 }}}$

$= 7. 5 \times 1000 \qquad \bold {[ 1 m^3 = 1000 \: L]}$

$\boxed { \bold { = 7500 \: L}}$

Hence, the volume of water already used from the tank is 7500 L or 7.5 m³

@Agamsain