# Math Help - Optimization Problem Help

1. ## Optimization Problem Help

(a) Show that $C^2=(2x^3)/(2x-8.5)$
(b) Find the domain of C.
(c) Determine the x-value that minimizes C.
(d) Determine the minimum length of C.

I am unsure on how to approach this problem.... it would seem that I would need more angle information. It seems I could solve the left region of the polygon, but I have no idea what to do with the right-hand portion.

2. I guess that this is folding a piece of paper for example. Then you have:

Set up equations now and this should be easy.

EDIT: Did you get your equations?