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4 November, 19:13

Write a formula for the length l of a rectangle given its perimeter P and its width w. Justify your thinking.

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  1. 4 November, 22:53
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    P = 2l + 2w |subtract 2w from both sides

    2l = P - 2w |divide both sides by 2

    l = (P - 2w) / 2
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