The following problem describes how to compute the height of a pyramid

A pyramid 140 (cubits) in length of side, and 5 palms and a finger (¼ palm) is its slope (seked) What is the vertical height of it?

You are to divide one cubit by the slope doubled, which amounts to 10½ You are to reckon with 10½ to find 7 for this is one cubit

Reckon with 10½ two-thirds of 10½ is 7

You are now to reckon with 140 for this is the length of a side

Make two thirds of 140, namely 93 (cubits) This is the vertical height of it

Source Gay Robins "Mathematics Astronomy and Calendars in Pharaonic Egypt" in Civilizations of the Ancient Near East volume 3 edited by Jack M Sasson (New York Scnbners 1995) p 1810