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A gentleman has bought a rectangular piece of land whose perimeter is to be 100 rods.
A man hired a horse in London at 3 pence a mile. He rode 94 miles due West to Bristol then due north to Chester, whence he returned toward London for 66 miles, which put him in Coventry.
There is a four-sided field whose eastern side measures 35 paces, its western side 45 paces, its southern side 25 paces and its northern side 15 paces. Find the area of this field.
History of Maya calendars, including the modified base 20 number system used in them
A general mathematics website with much information on the history of mathematics.
A number of 3 digits in base 7 has the same three digits...
This is from a letter of June, 1695 in which Leibniz is discussing differentiation with Johann Bernoulli. The work in which these letters appear is the Virorum Celeberr. Got. Gul. Leibnitii et Johann Bernoulli Commercium Philosophicum et Mathematica, originally published in 1740.
Given: a circle with an inscribed equilateral triangle. The triangle has an area of 12 square units. What is the area of the circle?
The third part of a necklace of pearls, broken in a lover's quarrel, fell to the ground...
A speculator bought stock at 25% below par and sold it at 20% above par. He gained $1560. How much did he invest?