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A circular annular plate bounded by two concentric circles of diameter 1.2 m and 0.8 m is immersed in water with its plane making an angle of 45° with the horizontal. The centre of the circles is 1.625 m below the free surface. What will be the total pressure force on the face of the plate?           
a. 7.07 kN        b. 10.00 kN
c. 14.14 kN        d. 18.00 kN

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