The figure shows an empty flower vase of height 46 cm. It is made from 2 tanks. The top tank is in the form of a cuboid which has a square base side 8 cm and height 34 cm. The bottom tank is in the form of a cube of 12 cm. 3.16 litres of water is poured into the empty vase. What is the height of the water level from the base of the vase? (1 litre = 1000 cm3)