Answer:
195.6 inches squared
Step-by-step explanation:
First we find the value of one of the big triangles.
(14*8*0.5)
56
Next, we find the value of the three of them combined.
56+56+56 or 56*3
168
Now, we find the value of the smaller triangle.
(6.9*8*0.5)
27.6
Because we only have one small triangle, we don't need to do what we did with the other one now.
The last step is to add the area of the three triangles with the smaller triangle.
168+27.6
195.6
The surface area of the (shape...?) is going to be 195.6 in. squared.
