Answer = A
10*12 = 120 since it's a triangle multiply by 1/2 so you get 60.
The small triangle in top left is congruent to the triangle in top right. So it is also 60
So 60+60= 120
18*12=216
Multiply That By 1/2 = 108
The Two Triangles At The Bottom Are Congrent So 108+108= 216
216+120= 336