What is the surface area of this design?

  256 in²

Step-by-step explanation:

There are numerous ways to find the total area of this figure. One of them is to add up the individual areas of the 8 surfaces.

Another is to add the areas of the 5" wide surfaces (their total length is 32 inches, the same as the perimeter of the L-shaped face), and the areas of the L-shaped surfaces (equivalent to an 8×12 rectangle when one is fit upside down on the other).

Using this second method, we get an area of ...

  (5 in)×(32 in) + (8 in)×(12 in) = 160 in² +96 in² = 256 in²

( - 4 , -7 )

all the lines must parallel  

step-by-step explanation:

coordinates of c = ( - 1 , 2 )

3 units left = ( -4 , 2 )

9 units down = ( - 4 , 11 )