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The cavity of our chimney is an upright parallelepiped, the diagonal of whose base is 60"; and the height of the lower side of the lintel above the plane of the floor is 40".
A method for extracting square roots used in Italy through the 18th century was introduced in a manuscript by the 12th century mathematician al-Hassar. Appendix: When Was Fermat Born? (Not in 1601 ...)
Given the cats eye as shown. Let the radius of the eye be given by R. What is the area of the pupil?
Show that the curves x2 - y2 = a2 and 2 xy = b2 cross at right angles.
Howard Eves' sixth edition is still worth considering for a textbook.
Two persons sat down to play for a certain sum of money; and agree that the first who gets three games shall be the winner. After a few games they resolve to divide the stakes. How much should each person receive?
Find two number with sum 20 and when squared their sum is 208.
Two circles of radii 25 feet intersect so that the distance between their centers is 30 feet. What is the length of the side of the largest square inscribable within their intersecting arcs?
A square circumscribed about a given circle is double in area to a square inscribed in the same circle. True of false? Prove your answer.

[Translation of title: Algebra in the Time of Babylon. When Mathematics Were Written on Clay.] A thorough review of Jens Hoyrup's revision, expansion, and French translation of his own 1998 book for Danish high-school students.

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