A man takes 721 min to walk along the diagonal of a square field at the rate of 2km/hr. find the area of the square field in m^2.

• 288800555.55 m^2
  If Side of a square=a & diagonal=x,then
  a^2+a^2=x^2, 2a^2=x^2 or a^2=x^2/2,
  as x=distance covered by man @2000m/hr=(721/60)*2000=72100/3 m.
  Area =a^2=x^2/2=(72100/3)^2/2=72100*72100/(9*2)=288800555.55 m^2
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