Consider a 1 liter (1000 cm3) sample of air (in a kind of balloon), which is isothermally brought to a depth of 1 m in a lake (where the gage pressure is 9810 Pa). Estimate the reduction in volume (cm3) of the air in the balloon after it is brought to a depth of 1 m. Assume the isothermal bulk modulus of air is 105 Pa. Provide your answer as a positive quantity (in cm3 units), realizing that the increase in pressure would cause a decrease in volume.