Answer:
C.12
Step-by-step explanation:
Apply the formula for tangent-secant
Let the cord length inside the circle to be y
According to the tangent-secant relation
(3+y)/6 = 6/3
cross multiply
3(3+y)=6*6
9+3y=36
3y=36-9
3y=27
y=27/3
y=9
Distance x = y+3
x=9+3=12
