### Home > GC > Chapter 11 > Lesson 11.1.3 > Problem 11-43

11-43.

The two triangles are similar, which means the ratios of corresponding sides are equal.

Therefore

Since you now know that , you can determine the diameter and radius of the circle.

11-43.

The two triangles are similar, which means the ratios of corresponding sides are equal.

Therefore

Since you now know that , you can determine the diameter and radius of the circle.