Concentric circles are circles that share a common center with each other.
There are 3 circles in this diagram. There is a circle with center A, a circle with center B, and a circle with center C. There are no circles that share the same center, as all circles have their own centers.
There are no concentric circles shown.
Answer:

Step-by-step explanation:
There are two black slices.
So, out of 6 slices, you can land on 2 slices.
2 out of 6
2 / 6
1 / 3
Apothem- 6.928
Area (rounded)- 166.3
Answer: 24
Step-by-step explanation:
m - 15 + 15 = 9 + 15
m = 24