Question 814968
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Hi,
 a = (((L*W = 4CM^2}}}  L = 4/W
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Question states*** perimeter is 10 cm. 
 {{{2(4/W) + 2W = 10cm}}}
     {{{2W^2 +8 = 10W}}}
      {{{2W^2-10W + 8 = 0}}}
      {{{W^2-5W + 4 = 0}}}
       (W-4)=0 , W = 1cm , L = 4cm
      (W-1) = 0, W = 4cm , L = 1cm
Dimension are 4cm by 1cm
CHECKING our answer***
 {{{2*4 + 2*1 = 10cm }}}