A rectangle measures 12cm by 18cm.When its length and breadth is increased by an equal measure.Its area increases by 64cm.What is the perimeter of new rectangle?
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Area of org rectangular. =12×18=216sq.cm
Area of new rectangle=216+64=280sq.cm
Length and breadth of new rectangle=(12+2), (18+2)=14cm and 20 cm
P=2 (l+b)
2 (14+20)
2×34
68cm
Area of new rectangle=216+64=280sq.cm
Length and breadth of new rectangle=(12+2), (18+2)=14cm and 20 cm
P=2 (l+b)
2 (14+20)
2×34
68cm
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perimeter of new rectangle formed68m
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