Archimedes principle comes to play in this scenario: The weight of water displaced equals the weight of the steel block.
Weight = density*volume
In other words,
Density of steel block*it volume = Density of water displaced*its volume
Therefore,
Volume of water displaced = (density of block*its volume)/Density of water = (2.5*10^3*8*10^3)/(1*10^3) = 20000 m^3 = 2*10^4 m^3
This displacement of water can be achieved by lifting the tank mechanically.
Hope this helps but I think the answer is $1872
Answer:
Step-by-step explanation:
4x+3x=7x
-3x-2x-3x-2x=-10x
2+2=4
-3x & 4
Add 7 to both sides.
13+7=
20
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From up to down ;
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The first box :

The second box :

The third box :

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