You can put this solution on YOUR website!
1.) Find total volume of the tank:
d=diameter of tank, h=length of tank
2.) Find out the remaining fluid volume in the tank after it leaks out:
If the tank diameter is 60 cm, and the valve is 20 cm off the ground, then the volume can be expressed as a fraction.
of the total fluid volume will remain in the tank;
so, total_volume * 1/3 = remaining_volume