The following 2.5 m × 8.1 m × 6 m tank shown is filled by oil of SG = 0.88. Determine (a)...

The following 2.5 m × 8.1 m × 6 m tank shown is filled by oil of SG = 0.88. Determine (a) the magnitude and the location of the line of action of the resultant force acting on surface AB and (b) the pressure force acting on surface BD. Will the force acting on surface BD equal the weight of the oil in the tank? Explain.