A hexahedron (a polytope with six faces) is formed in the first octant as the region bounded by the coordinate planes and the three planes 2x + z = 4 , 2y+z = 4 , and x + y = 2 .Determine the surface area of this solid. You will need to draw several supporting pictures as you perform your calculations. Hint 1: The five points are emphasized for a reason. Start by finding them. To find one of the points, you will need to solve a system of linear equations (show your work). Hint 2: Try playing around with this shape in GeoGebra 3D. Notice any symmetries? Maybe you can save yourself some work.

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