Answers

2014-12-14T20:56:27+05:30
let the side of the square be =a
had he walked the edges he would have traveled=2a
                   waling the diagonal he would travel =√2*a
                   Percentage saved by him= (2a-√2a)100/2a
                                                        = (2-√2)100/2
                                                        = 29.28%
                                                      
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