Question 896508
1 litre = 1000 cm^3

so 1st convert it. Now 13,474 litres = 13,474,000 cm^3

Think the height of tank is H. And now lets find it.

Volume = Height x Length x Breadth

13,474,000 = H*70*55

H = 13,474,00/(7*55)

H = 3500 cm