Question

11.1 m
3.5 m
4 m
4 m
4 m

Answer 1

Surface area?

4 x 3.5 x 1/2 (basically just dividing by 2) = 7

11.1 x 4 x 1/2(basically just dividing by 2) = 22.2, 22.2 x 3(three triangles on the sides) = 66.6

Now let's add all the given areas:

7 + 66.6 = 73.6 m^2 is your answer.