The capacity of the water tank in liters is 46,080 liters
The capacity of an object is the volume of the object. A tank will take the shape of a cuboid and the volume of a cube is expressed as;
Volume = lbh
where b is the breadth and l is the length and h is the height of the tank.
Therefore the volume of the water tank is
V = lwh
V = 256 × 180 × 1000
V = 46,080,000 unit³
1000 unit³ = 1L ( as stated)
Therefore the volume of the tank in liters will be
46,080,000/1000
= 46,080 liters