Answer: 40.5
Step-by-step explanation: The way you get the surface area is by multiplying the numbers given, the rectangles are given as being 1.5 x 6, and the squares at 1.5 x 1.5, so you would multiply those, and then multiply them by the number of shapes that are the same size.
The rectangles would be;
1.5 x 6 = 9
9 x 4 = 36
The squares would be;
1.5 x 1.5 = 2.25
2.25 x 2 = 4.5
Now add the final numbers together to get the final surface area;
36 + 4.5 = 40.5
I hope this helps you!
