Answers

2014-02-27T16:23:05+05:30
Let ratio constant =x;
perimeter=2(l+b);
     84      = 2(11x+10x)
     84     =2*21x
     84   = 42x      
x=2
l=22                b=20
Area=L*b;
       =22*20
      =440
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