Answer:
SA=40cm^3
Step-by-step explanation:
In this shape, there are 2 same triangles, and 3 different rectangles.
First, you need to find the surface area of each shape:
Triangle: 4✖️8=32/2=16
Rectangle 1: 4✖️2=8
Rectangle 2: 8✖️2=16/2=8
Rectangle 3: 8✖️2=16/2=8
16+8+8+8=40
