Problem 1: Determine the pressure difference between points A and B in the following figure. Assume specific gravity of benzene, mercury, and kerosene as 0.88, 13.6, 0.82, respectively. Consider the air density as 1.2 kg/m³, water density as 1000 kg/m³, and acceleration due to gravity as 9.79 m/s².

Fig: 1

Fig: 2