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11 July, 07:41

Use the formula P=21+2w to find the width of a rectangle when the length is 18cm and perimeter is 48 ...

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  1. 11 July, 08:03
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    w=6

    Step-by-step explanation:

    P=2 (L) + 2 (w)

    48 = 2 (18) + 2w

    48=36+2w

    12=2w

    w=6

    checking;

    48 = 2 (18) + 2 (6)

    48 = 36+12

    48 = 48
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