A circulаr steel plаte [E = 195 GPа, ν = 0.31, and Y = 280 MPa] with a central hоle is simply suppоrted at the central hоle, free at the outer edge, and uniformly loaded as indicated in Case 2. For the plate, a = 300 mm, r0 = 75 mm, h = 10 mm, and p = 70 kPa. Determine the maximum bending stress in the plate.