I'm probably not going to be able to help you with this, and I don't know if it's just me, but I can't see either images you attempted to put in your post. Thought i'd give you the heads up.
edit: I can see it now. I'll think about it for a little while to see if i can be of assistance but odds are I won't do much good :/
edit2: Alright, thought about it. Not sure what the question is asking? It just says consider the surface and the point on the surface... what do you need to find?