Answer:
The answer is

Step-by-step explanation:
Area of a triangle is given by

From the question
base = 18
height = 6
So we have

We have the final answer as
<h3>54 units²</h3>
Hope this helps you
The sum of a trapezoid is 360 degrees
45+90+90+x=360
45+180+x=360
225+x=360
x=135
I think it is 0 because I googled it.
The answer to your question is c