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15 January, 12:24

A rectangle has a perimeter of 76 cm and length 31 cm what is its width

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  1. 15 January, 12:45
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    The formula for the perimeter of a rectangle is P = 2L + 2W

    you are given P (perimeter) and l (length.

    Replace the letters withe the given information and solve for width:

    76 = 2 (31) + 2W

    Simplify:

    76 = 62 + 2w

    Subtract 62 from both sides:

    14 = 2w

    Divide both sides by 2:

    W = 14/2

    W = 7 cm

    The width is 7 cm.
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