Geometrical Puzzles


Step Through:  
    The Earth Belt   Spider Ride  


Outside the Hole
after Martin Gardner

A paper sheet has the shape of a two-unit square with semicircles on opposite sides. If a disk with a diameter of two units is removed from the center as shown in the illustration, what is the area of the remaining paper?

file size
155 KB
Download PDF Print 'n' Play version

Get Adobe Reader


To print out PDF Print 'n' Play version of this puzzle, please download the latest version of the Adobe Reader.

Get Macromedia Flash Player

To ensure the best  Internet Experience, please download the latest version of the  Macromedia Flash Player

Last Update
August 18, 2004

< Home   |   Our Privacy Policy   |   About Puzzles.COM   |   Link to Us
Copyright 2004 ThinkFun Inc. All Rights Reserved.   Contact Us