The pressure at tapping A on the natural gas main in the figure is measured with a mercury U-tube manometer whose right limb is open to the atmosphere. A column of water stands on the mercury in the left limb, as shown, and the weight of the gas in the tube may be neglected. The local barometer reads 755 mm of mercury. Taking ρ_{water} = 1000 kg/m^{3}, S_{Hg} = 13.6 and g = 9.81 m/s^{2}, determine (a) the gauge pressure of the gas at A (answer in kPa) and (b) the absolute pressure of the gas at A (answer in kPa).