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23 December, 18:24

A rectangle has a perimeter of 84cm and a length 35cm what is its width

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  1. 23 December, 21:30
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    P = 2 (L + W)

    P = 84

    L = 35

    now we sub

    84 = 2 (35 + W)

    84 = 70 + 2W

    84 - 70 = 2W

    14 = 2W

    14/2 = W

    7 = W ... so the width is 7 cm
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