<span>1.perpendicular bisector.
2.midpoint.
3.perpendicular bisector.</span>
1-1/4 feet is the base side length.
Answer: Our required probability is 0.11.
Step-by-step explanation:
Since we have given that
Number of workers in first shift = 21
Number of workers in second shift = 15
Number of workers in third shift = 13
We need to find the probability of choosing exactly two second shift workers and two third shift workers.
So, it becomes,

Hence, our required probability is 0.11.
27/12=2.25
2.25x7=15.75
ANSWER: $15.75 for 7 cans