A storage tank is in the form of a cube. When it is full of water, the volume of water is 15.625 m3. If the present depth of water is 1.3 m, then find the volume of water already used from the tank.
A storage tank is in the form of a cube of side 2.5 m and it was completely filled with water. If the present depth of water is 1.3 m, then find the volume of water already used from the tank.