Question

In the diagram below, find the indicated segment length. Assume that lines or segments which appear to be tangent are tangent.

Answer 1

Explanation:

16 is tangent and the radial (12) is perpendicular

so this is a right triangle

Use Pythagorean theorem

?^2 = 12^2 + 16^2

?^2 = 400

? = 20 units