Question

A man walked diagonally across a square lot. Approx, what was the percent saved by not walking along the edges?

Answer 1

Distance along edges $=2a$

$a=$ side of square lot

Distance along diagonal $=a\sqrt{2}$

Percentage saved $=\left(\frac{2a-a\sqrt{2}}{2a}\right)\times 100=29.28\%$