A plate of rectangular shape having the dimensions of 0.4 m x 0.6 m is immersed in water with its longer side vertical. The total hydrostatic thrust on one side of the plate is estimated as 18.3 kN. All other conditions remaining the same, the plate is turned through 90° such that its longer side remains vertical. What would be the total force on one face of the plate?
a. 9.15 kN b. 18.3 kN
c. 36.6 kN d. 12.2 kN