So fill out the coordinate with those given numbers, and count how far apart they are and you will get your answer. Then times it by x.
12x + 6y = 120
-24x -6y =-180
-12x = -60
x = 5
4(5) + y = 30
20 + y = 30
y = 10
(5, 10)
Answer:360/90 = 4
Total area = 4 times that of the sector.
Step-by-step explanation:
A 90 deg sector has 1/4 the area of the circle.
Total circle area = 4*9pi = 36pi