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Convergence articles

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A cliff with a tower on its edge is observed from a boat at sea; find the height of the cliff and the tower.
In how many ways can a vowel and a consonant be chosen out of the word "logarithms?"
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?
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 description of a Research Experience for Undergraduates conducted in 2007 at Hood College.
Prove geometrically that the hypocycloid is a straight line when the radius of the rolling circle is one-half the radius of the fixed circle.
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.
There is a round fish pond of certain dimensions, and into the pond is dropped a marble column. How high will the water rise?
Given the frustum of a circular cone with height h.
What is the sum of the following series, carried to infinity: 11, 11/7, 11/49, etc.?