itskatelyn01 itskatelyn01

10-10-2019
Mathematics

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The length of a rectangle is three times the width. The perimeter of the rectangle is 72 feet. Find the length and width of the rectangle

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Аноним Аноним

10-10-2019

Let l and w be the length and width of the rectangle.

We are given l=3w.

The perimeter of a rectangle is 2(l+w).

Since l=3w, the formula becomes 2(3w+w)=8w

The perimeter is 72, so we have

[tex]8w=72 \iff w = \dfrac{72}{8}=9[/tex]

And thus l=3*9=27

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