A man walked diagonally across a square lot approximately what was the percent saved by not walking along the edges?
(a) 15%
(b) 20%
(c) 25%
(d) 30%

• 30% is the ans.....(2a-sqroot(2)a)/2a*100%
• 11 years agoHelpfull: Yes(3) No(0)
• d) 30%
  If side of the squre=x,
  distance walked along the edges=x+x=2x
  distance walked diagonally=Sqrt(x^2+x^2)=sqrt(2)*x
  % of the diagonal distance to the distance along the edges =100*sqrt(2)*x/2x=70.71
  So percent saved=100-70.71=29.29 ~30
  
• 11 years agoHelpfull: Yes(0) No(0)
• let side of square be "a"
  => ((2a-sqrt(2)a)/2a)*100=29.2%==30%
• 11 years agoHelpfull: Yes(0) No(0)
• ans=30%
  let x=side of square lot
  % saved=((2x-xsqrt(2)/2x)*100=30
• 11 years agoHelpfull: Yes(0) No(0)
• 30%
  sqrt(2)=0.3010
• 10 years agoHelpfull: Yes(0) No(0)