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An expert is someone who knows some of the worst mistakes that can be made in his subject, and how to avoid them.
Physics and Beyond. 1971.
Loci: Convergence
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Pyramid calculation
Given a pyramid 300 cubits high, with a square base 500 cubits to a side, determine the distance from the center of any side to the apex. (Cairo Papyrus, 250 BCE)
Click here to reveal the answerThe answer is: 390.51 cubits