Answer:
154mm²
Explanation:
The first step is to break down all the shapes.
- 4 triangles and one parallelogram
Lets find area of the upper triangles first
Formula: 1/2(b)(h)
A = 1/2 (7)(11)
A = 38.5mm²
Since there's two of those, multiply by 2
38.5mm² x 2 = 77mm²
Now, we move to the area of the bottom triangles
Same formula: 1/2(b)(h)
A = 1/2(7)(3)
A = 10.5mm²
Again, we multiply by 2 since there are two of those
10.5mm² x 2 = 21mm²
Lastly, we find the area of the parallelogram
Formula: b x h
For the base, we double the length of the base of the triangles
7 x 2 = 14
A = 14 x 4
A = 56mm²
Now we add all of them up
77mm² + 21mm² + 56mm²
= 154mm²
Sorry if Im wrong