A circular plate with radius r = 0.8710 m lies next to a rectangular plate with base br = 0.7572 m and height hr = 0.72 m which lies next to a triangular, plate with base bt = 1.79 m and height ht = 0.9397 m. Determine the center of gravity of the rectangular plate in the y-direction if its surface density varies in the y-direction according to σr = 4.55 · y kg/m2.

A circular plate with radius r = 0.8710 m lies next to a rectangular plate with base br = 0.7572 m and height hr = 0.72 m which lies next to a triangular, plate with base bt = 1.79 m and height ht = 0.9397 m. Determine the center of gravity of the rectangular plate in the y-direction if its surface density varies in the y-direction according to σr = 4.55 · y kg/m2.