Theorem 7. (The Last Supper in meters and royal cubits)
Leonardo painted the dimensions of the Last Supper to reflect the relation between metric and Royal Cubit systems.
As proved above, the number 880 is needed to reveal the number π out of the Great Pyramid of Giza. At first, it only seems a lucky coincidence that the width of the Last Supper (see also Appendix 10) is exactly 880, although in different unit of measurement (cm).
However, it should be told that the height of the Last Supper is 460 cm. This is of importance because 460 meters is really close to the original unit of measurement – 880 Royal Cubits. Thus it is highly possible that Leonardo really painted the Last Supper to reflect these two important units of measurements. In Leonardo’s day, the metric system was something new, and correspondingly, the Royal Cubit system was already thousands of years old.28 Perhaps this was Leonardo’s way of expressing yesterday and tomorrow in the same painting. (cf. Table 1, Image 4 etc.)
28 The metric system was not used in Leonardo’s day. However, the history of the meter coincides with the century of Leonardo and thus it is possible that there was already an awareness of this measuring system. Reader should also understand that Leonardo was in the top scientists of his age and his knowledge was way ahead of the average man. The idea of meters has lived since 13th century, when another Leonardo published his book Liber Abaci (Leonardo of Pisa, aka. Fibonacci, 1202). See also De Thiende by Simon Stevin (1586).