Answer:
volume of water in the tank when it its half full
The capacity of the water tank = (5.04) /2 = 2.52 m³ 
2,520 litres
Explanation:
Dimensions of a water tank: 
Length (l) = 2.0 m, 
wide (w) = 1.4 m, 
Depth (h)= 1.8 m, 
Volume of the tank (V) 
LWH 
2.0m × 1.4m × 1.8 m 
= 5.04 m³ 
= 5.04 × 1000 litres 
/* 1m³ = 1000 litres */ 
5,040 litres 
Therefore, 
The capacity of the water tank = 5.04 m³ 
5,040 litres