I can explain how to do it, but you'll have to do the actual math yourself. For the volume, you just need to multiply the length, width, and height of the rectangle. Since its a triangle, you'll need to divide that volume in half.
For surface area, you'll need to find the area of EVERY shape in the figure: the 3 rectangles, and the two small triangles on the sides. You then add those areas together, and you'll get your surface area. Hope this helps! :)
Think you can tackle it on your own now?
