Answer:
43.5
Explanation:
To find the area of a triangle you need to do the base times height divided by 2. This is a right triangle, so 11 is the height. the base is 2+4+3, which is 9.
9 x 11 is 99
99/2 is 49.5
Then the area of the rectangle is 6, so 49.5-6 is 43.5.