What does labelwhat does label the side length of the region

Parks is wearing several rubber bracelets one third of the bracelets are tie-dye 1/6 are blue and 1/3 of the remainder are camouflage if parks wears 2 camouflage bracelets how many bracelets does he have on

Negative 5 1/12 + negative 4 1/4 + 6 3/4

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.