The hydrostatic thrust on one side of the plate is

Question

A circular annular plate having outer and inner diameters of 1.4 m and 0.6m respectively is immersed in water with its plane making an angle of 60⁰ with the horizontal. The center of the circular annular plate is 1.85 m below the free surface. The hydrostatic thrust on one side of the plate is                     

(a) 1975 N                   (b) 19.75 N     

(c) 11.4 N                    (d) 22.8 N