The answer is c 5112
The formula for the area of a triangle is 1/2bh. So you multiply 36 by 38 and 1/2 to get 684
You then have to fine the area of the rectangles and since they’re three of them you multiply 3 by 36 and 41 to her 4428.
When you add 4428 and 684 you get 5112 square inches