主题：【法老的3.14】 （上） -- 小人书

下面是WIKI关于金字塔风化前后的数字：

http://en.wikipedia.org/wiki/Great_Pyramid_of_Giza

At construction, the Great Pyramid was 280 Egyptian Old Royal Cubits tall (146.5 metres or 481 feet), but with erosion and the theft of its topmost stone (the so-called pyramidion) its current height is 455.21 ft, approximately 138.75 m. As has been proven by papyrus documents[citation needed], each base side measured in antiquity 440 (20.63 inch) royal cubits. Thus, the base was originally 231 m on a side and covered approximately 53,000 square metres with an angle of 51.7 degrees—close to the ideal for a stable pyramidal structure. Today each side has an approximate length of about 230.36 meters, well within the precision of that measurement. The reduction in size and area of the structure into its current rough-hewn appearance is due to the absence of its original polished casing stones, some of which measured up to two and a half meters thick and weighed upwards of 15 tonnes.