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5 July, 23:50

The length of a rectangle is 8cm more than 3 times it's width. The perimeter of the rectangle is 64cm

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  1. 6 July, 00:02
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    The length is 26 cm, and the width is 6 cm.

    Step-by-step explanation:

    The width is unknown. Let w = width.

    The length is 8 cm more than 3 times the width.

    length = 3w + 8

    The perimeter is 64 cm.

    P = length + length + width + width

    3w + 8 + 3w + 8 + w + w = 64

    8w + 16 = 64

    8w = 48

    w = 6

    The width is 6 cm.

    length = 3w + 8 = 3 (6) + 8 = 18 + 8 = 26

    The length is 26 cm
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