to extend my range, how can i wire cat6 my wn3000rp extender to my router

I wasn't clear in my first request, let me clarify.   My home is large in length,  over 90 ft.   My router is located at one end and I'm attempting to extend my Wi-Fi connection to the other.   Multiple walls and etc degrade my signal, despite my wn3000rp which I've located approximately midway.   I have decided to try hard wiring with cat6 ethernet cable and avoid the fluctuations of my wireless attempt.   However, i have seen and  read that this is not plausible. Does anyone have any suggestions as to how I can simply use my extender in the fashion I'm trying and wire direct from router to my extender.