Answer:
The surface area for the three rectangles is 48, 42, and 40 cm^2.
The surface area for the two triangles is 20 and 20, but for triangles, when you are finding the area of a triangle, you have to divide by 2.
4x5=20
20÷2=10
Now, do the same for the other triangle.
10+10=20.
Now, add all the surface areas together.
48+42+40+20=150
Surface area= 150 cm^2
:)
