the area of a square feild is 8100 square metres . a man walks along the boundary at 24m/min . in how much time will he complete three rounds of the feild ... plss ans.
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Area of square field=8100
let a be the side of the square,
so a²=8100
so a=90= side of a square
total perimeter of square=4x90=360
To complete 3 rounds of the field of perimeter 360 he has to travel (3x360)m
but he travels 24m in 1 min.
therefore he takes, time=3x360/24 min
=45 min.
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