Hints:
Surface area is the sum of areas of all faces (Triangles, rectangles)
Area of Triangle = \(\frac{1}{2}*b*h\)
Area of Rectangle \(=W*L\)
Volume is the area of the cross-sectional multiplied by the length/height.
The volume of this shape is the area of the cross-sectional multiplied by the length between the two triangles on the right. (The long dotted line also)