Question 863682
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Hi,
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 p = 2L + 2w = 40cm
0r  L + w = 20cm
   (2w+2) + w = 20cm     L = 2 cm more than twice its width
     3w = 18cm
      w = 6cm  and L = 14cm    {{{2*6 + 2}}}
CHECKING our answer***
 6cm + 14cm = 20cm
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