Answer:
if union, U means plus,+
if intersect means minus, -
FG
Step-by-step explanation:
Answer: 0 -4 and -8
If you divide -12/-3=4 and 4/4=1
90
circumference of total circle = 16 pi
16 pi / 4 pi = 4
1 / 4 =25%
1/4 * 360 = 90
