Step 1) Find the area of the triangles
1/2(3 x 4) = 6
1/2(3 x 4) = 6
Step 2) Find the area of the rectangles
5 x 11 = 55
4 x 11 = 44
3 x 11 = 33
Step 3) Find the total surface area
SA = 6 + 6 + 55 + 44 + 33
SA = 144 square centimeters
Hope this helps! :)
