Answer:
For part A, you could decompse the figure into a rectangle and two triangles.
for Part B, its the first one.
Step-by-step explanation:
If you split up the figure into two parts then you will get 2 triangles and a rectangle. The area of 1 triangle is
A=1/2xbh
but there are two triangles so it would be 2(1/2x bh).
you can then multiply tht by the areaof the rectangle and get
2(1/2x12*5)+(16*12)
