Mathematics, 12.07.2019 16:00 cheyenne5201
Arectangular is 4 times as long as it is wide . if the area is 16 square feet, find its perimeter
Answers: 1
![\bf \textit{area of a rectangle}\\\\ A=Lw~~ \begin{cases} L=4w\\ A=16 \end{cases}\implies 16=(4w)w\implies 16=4w^2 \\\\\\ \cfrac{16}{4}=w^2\implies 4=w^2\implies \sqrt{4}=w\implies \boxed{2=w} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill \stackrel{perimeter}{\stackrel{L}{4(2)}+\stackrel{w}{2}\implies 10}\hfill](/tpl/images/0081/5191/4d4f0.png)
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Arectangular is 4 times as long as it is wide . if the area is 16 square feet, find its perimeter...
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