guest2013 Post on Thu, 20/09/2018 7:34am Suggested answer: 8000cm3 / 1600 cm2 = 5cm a) Height of water in Tank Y at first is 5 cm. 1400 cm2 x 8 cm = 11200 cm3 11200 cm3 + 8000 cm3 = 19200 cm3 1600 cm2 + 1400 cm2 = 3000 cm2 19200 cm3 / 3000 cm2 = 6.4 cm b) New water height is 6.4 cm