fluid manometer as shown in Figure 2. Determine the gage pressure of air in the tank
if h₁ = 0.25 m, h₂ = 0.35 m, and h3 = 0.5 m. The densities of water, oil and mercury
are 1000 kg/m³, 850 kg/m³ and 13600 kg/m³, respectively.
Fig: 1