All of the side lenghts of the smaller triangles have been multiplied by 2 which guarantees side side side similarities. (basically similar angles shows congruence when their sides are proportional)
Answer:
A=0.5(a+b)h
=0.5(27+17)4=88units^2
Step-by-step explanation:
B.offer another idea hope i helped :)
The answer to this one is<em> xy + 4</em>