A slight miscalculation I think. It would seem that should be 4.5 x 12 x 1.66 for one and 2 x 5 x 1.66 on the other. Not a huge difference (I get 106.24) on this small amount but it can make a big difference on larger amounts or if selling or calculating what is needed for a certain period of time. Still, danged good work on your part.
Used to be here too but I'm thinking the ugliest out. Seems the prior farmers loved to whack every fencing apparatus into them every 2 feet!!