A rectangular field is to be fenced on 3 sides leaving a side of 20 m uncovered. If the area of the field is 680 m^{2} , how many meters of fencing is required?
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Uncovered part=breadth of rectangle=20m
area of field=680
area=l*b
∴length=34m
∴Fencing required = (34+34+20)m
=90m
area of field=680
area=l*b
∴length=34m
∴Fencing required = (34+34+20)m
=90m
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