A rectangular tank of 12 m long, 9 m wide and 14 m deep contained water to a depth of 8 m. What is the volume of water to be added to fill up the tank?

m^{3} .

The volume of water to be added to fill up the tank

= 12 m × 9 m × (14 m – 8 m)

= 648 m^{3}