(from the article `Giza, Pyramids of`) ...they have been almost entirely stripped of their outer casings of smooth white limestone; the Great Pyramid, for example, is now only 45125 feet ... Found on http://www.britannica.com/eb/a-z/k/25
fourth king of the 4th dynasty (c. 2575–c. 2465 ) of Egypt and builder of the second of the three Pyramids of Giza.[4 related articles] Found on http://www.britannica.com/eb/a-z/k/25
4th King of the 4th dynasty, was the son of built the second largest pyramid. Greek names Chefren /Chephren. Found on https://www.encyclo.co.uk/local/21372