Answer:

Step-by-step explanation:
If AB is tangent to the circle, then angle ABO is right angle and triangle AOB is special
triangle. In this triangle, the leg that is opposite to the angle of 30° is half of the hypotenuse. Thus,

By the Pythagorean theorem,

214.5
11x22=242
11x5/2=17.5
242-17.5=214.5
Answer:
6/5
Step-by-step explanation:
The last graph is the answer