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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

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thank you…

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