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8 June, 23:42

A rectangle has a a perimeter of 72 ft. The length and width are scaled by a factor 3.5.

What is the perimeter of the resulting rectangle?

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  1. 9 June, 03:07
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    If the first rectangle has length, l, and width w then its perimeter is given by the following relation

    2l+2w=72 divide by 2 on both sides so that the relation now becomes l+w=36

    If l and w are scaled by a factor of 3.5, the new measurements of your resulting rectangle will 3.5l+3.5w-->3.5 (l+w)
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