the perimeter of a rectangular swimming pool is 154 m. its length is 2m more than twice its breadth. what is the length and breadth.
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perimeter=154m
or 2(l+b)=154
or l+b=77
or 2b+2+b=77
or 3b=77−2
or 3b=75
or b=25m
now lenght=2b+2
=2×25+2
=52m
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