A vat filled with oil (SG = 0.85) is 7 m long and 3 m deep and

Question:

A vat filled with oil (SG = 0.85) is 7 m long and 3 m deep and has a trapezoidal Cross-section 2 m wide at the bottom and 4 m wide at the top, as shown in Fig P2.50 Compute (a) the weight of oil in the vat; (b) the force on the vat bottom; and (c) the force on the trapezoidal end panel.