You can put this solution on YOUR website! Given :
Length of the tank = 90 cm
Height = 40 cm
Capacity of the tank = volume = 576 ltr = 576000 cc
Solution : Volume of the tank = length * breadth * height = l * 90 * 40 = 3600l
3600l = 576000
l = 576000/3600 = 160 cm
Therefore, Length of the tank = 160 cm