Answer:
Explanation:
NQ is a tangent line. That means that where it meets the circle results in a right angle. Therefore, we have a right triangle where XQ is the hypotenuse. Using Pythagorean's Theorem,
where 8 is the radius because the diameter is 16.
400 - 64 = x² and
336 = x² so
x = 18.3 which is the length of NQ