Question

$500$ persons have to dip in a rectangular tank which is $80m$ long and $50m$ broad. What is the rise in the level of water in the tank, if the average displacement of water by a person is $0.04m^3$?

Answer 1

Increase in volume can only occur with increase in height.

Hence total increase in volume $=500\times 0.04=20m^3$

$80\times 50\times △h=20$

$\Rightarrow △h=0.005m$