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The square of a certain number multiplied by itself and by 200 is 446,976. What is the number?
Page from the table of contents of Robert Recorde's The Grounde of Artes (1543) in which is outlined the first dialogue. This dialogue deals with some of the elements of arithmetic, including the basic operations and the use of the rule of three (or the Golden rule).
The authors makes the case for Leonardo da Vinci as the first modern scientist, as he discussed Leonardo's mathematics and science.
Two bicyclists travel in opposite directions around a quarter-mile track and meet every 22 seconds. When they travel in the same direction on this track, the faster passes the slower once every 3 minutes and 40 seconds. Find the rate of each rider
A powerful, unvanquished, excellent black snake, 80 angulas in length, enters into a hole at the rate of 7 1/2 angulas in 5/14 of a day, and in the course of a day its tail grows 11/4 of an angula.
Now there is a wall 5 feet thick and two rats tunnel from opposite sides.
A man has four creditors. To the first he owes 624 ducats; to the second, 546; to the third, 492; and to the fourth 368.
Images from a 16th century text about the astrolabe and its uses
A rifle ball is fired through a three-inch plank, the resistance of which causes an unknown constant retardation of its velocity.
A new sourcebook containing the works in their original form along with a translation and a brief commentary.

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Dummy View - NOT TO BE DELETED