I am trying to find the entire surface area of the entire shape. I got 306, but it is wrong.
Is it possible you could help?

Answer:
281
Step-by-step explanation:
12*4 rectangle 2 times because theres 2 of the same surfaces
5*4 rectangle 2 times
12*5 rectangle on the bottom surface 1 time
4 triangle surfaces of (5*5)/2
7*5 rectangle on top
add and you get 281