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9 November, 09:38

Rectangle with length (x + 3) and width 7

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  1. 9 November, 10:06
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    P = 2l + 2w

    P = 2 (x + 3) + 2 (7)

    P = 2 (x) + 2 (3) + 14

    P = 2x + 6 + 14

    P = 2x + 20

    A = lw

    A = 7 (x + 3)

    A = 7 (x) + 7 (3)

    A = 7x + 21
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