Answer:
522 
Step-by-step explanation:
To find the surface area, we can find the area of each shape in the net.
There are 2 identical triangles and 3 different rectangles. Then we can add all of these areas together

Answer:
10 or -10
Step-by-step explanation:
Answer:
To find probability, divide the number of times an event happens by the number of trials.
When a line is perpendicular, the slope is the negative reciprocal. Therefore, since the slope is 4, the slope of a line perpendicular is -1/4