Answer:
(x + 4)^2 + (y-9)^2 = 121
Step-by-step explanation:
We can write the equation of a circle as
(x-h)^2 + (y-k) ^2 = r^2 where (h,k) is the center and r is the radius
(x - -4)^2 + (y-9)^2 = 11 ^2
(x + 4)^2 + (y-9)^2 = 11 ^2
Answer: 18
80 - 44 = 36
36 / 2 = 18
1.85
20.2-18.35=1.85
13.50
15.75 - 2.25= 13.50
Check: 13.50 + 2.25 = 15.75