Answer:
the area is 157
Explanation:
start off by finding the area of your triangle that put you at 18. to make the rest easy make another triangle on the other side and you should come up with a perfect square and 2 triangles. find the area of the square which is 121 and then multiply your triangle area by 2 because you have 2 triangles that comes out to 36 add 121 and 36 and you get 157. which is the area of your parallelogram.