The answer would be set B
The first option is correct. See an explanation below.
Answer:
The total length of the border is 
Step-by-step explanation:
we know that
The circumference of a circle is equal to

we have

assume

substitute

Answer:
1,2,3,4 on edge
Step-by-step explanation:
Answer: 200
Step-by-step explanation:
1200 divided by 6 = 200