Consider the following static layered fluid configuration: NOT TO SCALE D Not to scale Fluid A is water (p = 1000 kg/m), fluid B is engine oil (p = 884.1 kg/m), fluid C is a liquid having specific gravity of 1.55, and fluid D is air. Assume a density of water equal to 1000 kg/m and a temperature of 300 K for other thermophysical properties. The elevations are z = 4 cm, z = 3cm, z3 = 6 cm, z4 = 3cm, Z5 = 8cm, and Z6 = 5 cm. Determine the gage pressure of air, in kPa, if the hydrostatic pressure at the bulb encompassing fluid A is equal to 180 kPa (gage). Note the location in the bulb where the pressure is equal to 180 kPa (gage) is at the bottom tick-mark corresponding to the dimension Z.