This is the SUM of all of the figure's parts
there are two triangles 6 x 8 area of triangle = 1/2 x 6 x 8 x 2 (the 2 is becuse there are 2 triangles)
there are two long rectangles ONE is area = 10 x 4 and ONE is 8 x 4
and finally the end rectangle is area 6 x 4
Add all of the red areas to get the total surface area.......