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Solve the following problems given below:

Problem I: The density of air is 1.2 kg/m³. The dimensions of this classroom are approximately 15 m x 8 m x 4 m. How many kilograms of air are in this room?

Problem II: Water and oil are filled in tube as shown. The density of water is 1000 kg/m3 and the density of oil is 850 kg/m³. What is the ratio hwater/hoil?

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