Since the lines are perfectly straight, we can assume that each line in an arc is 180 degrees. since it gives us 43 degrees for the angle next to z, we just need to subtract 43 from 180. this gives you the answer 137 degrees.
To answer this, you multiple 1000 by 7,234 because each box comes with 1000, so if there are 7234 boxes, then you multiple the stirrers by the # of boxes
