Pin it!
Google Plus

Brain Teasers

/uploadedImages/Brain_Teasers/BT54-big.jpg

Square in Circle

To the left is a circle with an inscribed square. Obviously, there isn’t room for another nonoverlapping square of the same size within the circle. But suppose that you divided the square into n2 smaller squares, each with side length 1/n. Would one of those smaller squares fit in the space between the large square and the circle? As shown to the left, this works if n = 16 and the large square were divided into 256 smaller squares. But it would work for smaller values of n, too.

What is the smallest value of n such that one of the smaller squares would fit between the larger square and the circle?

This brainteaser was written by Derrick Niederman.  

More Brain Teasers