Question

$500$ 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 $0.04{\text{m}}^3$?

Answer 1

$500$ Person have to dip in a tank in a rectangular tank which is $80m$ long and $50m$ broad.

What is the rise in water level of tank , if average displacement of water by a person is $0.04m3$

Water displaced $=500\times 0.04=20m^3$

Height rise $=x$

Volume of water

$=l\times b\times h=80\times 50\times h=20=h=0.005m=0.5cm$

Hence the rise in water level is $0.5cm$