if this question is for K12 is 448 your correct answer.
18in / 10in/ 14in = 448
I did the test and this is the right answer
I hope this helps.
The area of a parallelogram is simply base times height, or BH. So, the area of the two parallelograms is 2BH.
The area of a triangle is 1/2bh (to distinguish the triangle's b and h from the parallelogram's). Therefore, the area of the three triangles is 3/2bh.
Adding up all of the areas, we get A = 2BH + 3/2bh.