 The same number can also be used in the interpretation of certain ancient Egyptian calculations of the dimensions of pyramids.However, the much greater numerical precision of the numbers on YBC 7289 makes it more clear that they are the result of a general procedure for calculating them, rather than merely being an estimate.The same sexagesimal approximation to , 1;24,51,10, was used much later by Greek mathematician Claudius Ptolemy in his "Almagest".