Answer:
B. 3
Step-by-step explanation:
16 : 4 = 12 : |GD|
4=12 : |GD|
|GD| = 12 : 4 = 3, Answer is B
A
The central angle is equal to the arc that subtends it , then
arc AB = 30°
arc ACB = 360° - 30° = 330° → A
x + 5
