Please help me evaluate the problem below, which is attached in the picture.

Mathematics

1 answer:

Romashka-Z-Leto [24]3 years ago

4 0

Plugging it into the calculator you get= .1402217

Not sure if decimal version is fine.?

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$\bf \textit{perimeter of a rectangle}=p=side+side+side+side
\\\\
or\implies p=w+w+l+l\implies p=2w+2l
\\\\
p=2(w+l)\qquad 
\begin{cases}
w=width\\
l=length\\
------\\
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-----------------------------\\\\
\textit{area of it}=A=w\cdot l\qquad \begin{cases}
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------\\
A=40
\end{cases}\implies 40=wl\\\\
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$\bf thus\qquad 
\begin{cases}
40=2(w+l)\to \frac{40}{2}=w+l\to\frac{40}{2}-l=\boxed{w}
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--------------\\
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