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Convergence articles

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If 12 cattle eat up 3 1/3 acres of meadow in 4 weeks and 21 cattle eat up 10 acres of exactly similar meadow in 9 weeks, how many cattle shall eat up 36 acres in 18 weeks? (Hint: The grass continues to grow.)
What is the perpendicular height of a cloud when it's angles of elevation were 35 degrees and 64 degrees as taken by two observers?
This meeting of the Canadian Society for the History and Philosophy of Mathematics takes place in Vancouver, BC, in association with the 2008 Canadian Congress of the Humanities and Social Sciences
Determine the radii of three equal circles decribed within and tangent to a given circle, and also tangent to each other
In a certain lake, swarming with red geese, the tip of a lotus bud was seen to extend a span [9 inches] above the surface of the water.
In this fascinating and accessible book, the author devotes one lively, informative page of description and one striking, full-page illustration to each of 250 milestones in mathematics.
Poster picturing five famous women, from Hypatia to Grace Hopper.
Wanting to know the breadth of a river, I measured a base of 500 yards in a straight line close by one side of it.
Given a pendulum as shown. The height of the pendulum is two units and its horizontal width is 2 units. What is the area of the pendulum?
Why should we use historical problems in today's classroom? This article answers that question and serves as an introduction to the problems on this website.