The correct answer is 5 bags
Answer:
E. 400
Step-by-step explanation:
So this is how we set this up, and how we solve

Hope this helps!
So you are solving for circumference of a quarter circle: 
r= 28

To get the answer, we can divide 56 by 5 to find one fifth of the cats. Then, we can multiply this number to get four fifths of the cats. Then, we put this number over 90 since there is 90 pets in the entire show. Then, this answer ends up being about half all of the pets are calicos.
I believe the answer is 6