A cubical container with a side of 5 cm is filled with water up to a height of 2 cm.
Given,
Side of cubical container (l=b=h) =5 cm
Area of the base (A) =l×b=5×5=25 cm2
Volume of the container = A×h=25×5=125 cm3
Water is filled up to a height of 2 cm.
So, volume of the filled portion =(A×h)=25×2=50 cm3
Amount of water to be added = Volume of the container - Volume of the filled portion
=125 cm3−50 cm3=75 cm3
Thus, the amount of water to be added to completely fill the container is 75 cm3.