Answer:
8
Step-by-step explanation:
don't start with 2, start with 0
-2x + 6 - 13x + 16
= -15x + 22
8x8 is 64 for the base. Then, 12x8 is 96 divided by 2 is 48, so the surface area of one side triangle is 48x4 is 192 and add the base of 64 and you get 256.
