The answer is 38 degrees. It WOULD be -38, but difference can not be negative.
what do you need answered the opp length?
48 of the 1/4 foot pieces can be cut from a 12 foot board.
Answer:48
To find the surface area we deconstruct the figure then add all the areas together.
The area of the rectangle on the bottom is 8*6 or 48.
The side rectangles are 5*6 or 30.
The two triangles are

or 12.
48+30+30+12+12= 132.
Hope this helps!