please show all your work!

We are in the Magic Kingdom! Sally and Sarah have been exploring and happen upon the new Tron attraction that is not open to the public yet. Tommy finds some fencing and has been talking to the Disney lmaginecrs and they need the lence of gooo square feet in a rectangular plot in front of the ride that needs to be two sections with three sides perpemlicular to the wall of the ride and the other two sides parallel to the wall of the ride. The fence along; the wall costs $3 per foot while all the other parts cost 23 per foot. What dimensions should the pen he to minimize cost