$1000 Math Chat Book Quest (Math Chat)
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http://www.maa.org/features/mathchat/mathchat_1_20_00.html  


Frank Morgan, MAA Online  
Solution to the challenge: On a beach in Oregon, at a certain moment, the very last bit of the Sun disappears below the horizon. The question is: Can I make that last bit of Sun reappear by jumping up quickly to my full height, or perhaps by very quickly running up the hill behind me, to increase the elevation of my point of view? Answer (Joseph DeVincentis). "Yes  barely..." New challenge: Thomas Hales of the University of Michigan proved that regular hexagons provide the leastperimeter (leastlength) way to divide the plane into equal areas (see June 17 Math Chat). What is the shortest network of curves you can find dividing the surface of the sphere into say four equal areas? five equal areas? other numbers of equal areas?  


Levels:  High School (912), College 
Languages:  English 
Resource Types:  Problems/Puzzles, Articles 
Math Topics:  HigherDimensional Geometry 
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