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Convergence articles

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In baking a hemispherical loaf of bread of 10" radius, the crust was everywhere of an equal thickness, and the solidity of the crust was equal to half the solid content of the whole loaf. What were the dimensions of the interior soft part?
Now there are three sisters who leave home together.
A collection of 24 mini-posters, each containing a quotation about mathematics.
Three congruent circles of radius 6 inches are mutually tangent to one another. Compute the area enclosed between them.
This is a page from an early printed edition of the Arithmetica of Jordanus de Nemore (early 13th century).
A four-sided town measures 1100 feet on one side and 1000 feet on the other side, on one edge 600 and the other edge 600.
A history of the various algebraic structures that came together to give us "abstract algebra" by early in the twentieth century.
What is the sum of the following series, carried to infinity: 11, 11/7, 11/49, etc.?
There is a log 18 feet long, the diameter of the extremities being 1 ft and 2.6 ft respectively...