Drexel dragonThe Math Forum

The Math Forum Internet Mathematics Library

$1000 Math Chat Book Quest (Math Chat)

Library Home || Full Table of Contents || Suggest a Link || Library Help

Visit this site: http://www.maa.org/features/mathchat/mathchat_1_20_00.html

Author:Frank Morgan, MAA Online
Description: 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 least-perimeter (least-length) 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 (9-12), College
Languages: English
Resource Types: Problems/Puzzles, Articles
Math Topics: Higher-Dimensional Geometry

[Privacy Policy] [Terms of Use]

Home || The Math Library || Quick Reference || Search || Help

© 1994- The Math Forum at NCTM. All rights reserved.