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    3. A formula for finding the perimeter of a rectangle is P = 2L + 2W. If you know the perimeter (P) and width (W) of a rectangle, which formula can you use to find the length (L)?
    A formula for finding the perimeter of a rectangle is P = 2L + 2W. If you know the perimeter (P) and width (W) of a rectangle, which formula can you use to find the length (L)?

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    0  Views: 507 Answers: 2 Posted: 9 years ago
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      2 Answers

      Let's assign some numbers to the P and W.


      Perimeter can equal 36


      Width can equal 8


      2L + 2W = P


      2L + 2(8) = 36


      2L + 16 = 36


      2L + 16 - 16 = 36 -16


      2L = 20


      2L/2 = 20/2


      L = 10


      Confirmation:


      2L + 2W = P


      2(10) + 2(8) = 36


      20 + 16 = 36

      9 years ago. Rating: 6
      Comment this answer

         L=(P/2) -W 


         

        9 years ago. Rating: 5
        Comment this answer



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