500 persons have to dip in a rectangular tank which is 80 m long and 50 m broad What is the rise in ...........

Quantitative Aptitude ( CCS) Mensuration 3D

500 persons have to dip in a rectangular tank which is 80 m long and 50 m broad. What is the rise in the level of water in the tank, if the average displacement of water by a person is 0.04m³?

0.016 m

0.017 m

0.018 m

none of these

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Explanation:

Given,
The length of a rectangular tank (l) = 50 m
Breadth of the rectangular tank (b) = 10 m
Total displacement of water in a rectangular tank by 400 persons = 400* 0.02 m³
=8 m³ ……………………….(i)
Let the depth of tank be h m
Volume of the rectangular tank = length * breadth * height
= l* b* h
=50*10* h m³ = 500hm³ ………………………………….(ii)
Now equating equations i and ii, we get ,
8 = 500* h
H = 0.016 m
The rise in water level of the rectangular tank is 0.016m.