If you've only got 360 or 361 cubits then you're missing the more recent survey's. Here John Legon's comment on Dorner's recent one:

"While Petrie assumed that a figure of just 360 cubits had been intended for the base of the Bent Pyramid, however, Dorner has adopted the more accurate measure of 362 cubits, which is shown by the results of both surveys when the sides are expressed in terms of the royal cubit of 20.620 inches[9] or 0.52375 metres:"

I already highlited this in an earlier post of yours about the Bent where I also gave details of where to find the information you are after. I haven't checked but it might be given at the end of John Legon's article as well:

[www.legon.demon.co.uk]

Jon

www.egyptarchive.co.uk