Length (l) and depth (h) of tank is 2.5 m and 10 m respectively. To find: The value of breadth, say b. Formula to find the volume of a tank = l×b×h = (2.5× b×10) m3= 25b m3 Capacity of tank= 25b m3, which is equal to 25000b litres Also, capacity of a cuboidal tank is 50000 litres of water (Given) Therefore, 25000 b = 50000 This implies, b = 2 Therefore, the breadth of the tank is 2 m.