Answer:
2.4 litres
Explanation:
volume of a rectangular container = length x breadth x height/depth
volume of the rectangular container = 20cm x 12cm x 15cm
= 3600 cm³
volume filled with water = 2/3 x 3600 =2,400cm³
1000cm³ = 1 litre
therefore 2,400cm³ = 2400/1000 = 2.4 litres