Answer: (a)- 
Step-by-step explanation:
Given
Central angle is 
The radius of the unit circle is 
Arc length is given by

Put the values

Answer:
14
Step-by-step explanation:
Bracelet
There are 2 bracelets and she possibly picks three. :)
Answer:

Step-by-step explanation:





Answer:
4
Step-by-step explanation:
(y1-y2)/(x1-x2) = (2-10)/(1-3) = -8/-2 = 4