Answer:2
Step-by-step explanation;
The radius of a circle should be placed in the Z section making the answer A.
here two given sides are 10 and 6,
We use the rule of triangle here:
sum of two sides> third side
checking for each option
Option A: AC=4
4+6>10, 10>10 (false)
So AC cannot be equal to 4, option A is answer.