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2 March, 19:40

The length of a rectangle is 4cm longer than the width. The perimeter is 80 cm. Find the length and width.

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  1. 2 March, 20:08
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    Length = l

    Width = w

    2l + 2w = 80cm

    l+w = 40cm

    l = w+4

    w+4 + w = 40cm

    2w + 4 = 40cm

    2w = 36cm

    w = 18cm

    l = 22cm
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