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The length of a rectangle is 8 units longer that the width 2w. What is the perimeter of the rectangle?

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tay

  1. well, if you define the width as 2w
    then the length is 2w +8 (you said so)

    so the perimeter would be 2 widths + 2 lengths
    = 2(2w) + 2(2w+8)
    = 4w + 4w + 16
    = 8w + 16

    why not just define the width as w instead of 2w ? Strange.

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    Reiny

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