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The Brainliest Answer!
2014-10-28T20:54:44+05:30
2(l+b)=28⇒l+b=14⇒l=14-b
lb=40..................(1)
l value in (1)
14-b×b=40
14b-b²=40
b²-14b+40=0
b=4,b=10
l=10,l=4

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