Answer:

Step-by-step explanation:
The surface area of the triangular prism consists of three rectangles and two triangles.
Rectangle One - 5 x 12 = 60 cm^2
Rectangle Two - 4 x 12 = 48 cm^2
Rectangle Three - 3 x 12 = 36 cm^2
Triangles - 2 x 1/2 x 3 x 4 = 12 cm^2
Thus, the total surface area of the solid is 
Answer: -2
(-5)(-1)x=(10)(-1)
5x = -10
x = -2
Answer:
-12
Step-by-step explanation:
6 + 1.5x = -12
1.5x = -18
x = -12