I have numerouse houses, farm buildings, commercial buildings over the years but I have never done an evergreen tree or any tree to speak off. I measured one today - if I did this right - if not tell me. 20ft across, 30ft high - actually held a tape up that far. I wheelled around the tree and got 60ft. The people are looking at the 5mm LED lights. Please tell me what I need to do to figure this one out. With my math I am getting an outragous number.