Question 895247
You know this:
If w is width, and L is length,


wL=A, using A for area.
Given:  L=5w
p=2w+2L, using p for perimeter.


Can you find w, and L, using these facts as symbolized?



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{{{wL=A}}}
{{{w*5w=A}}}
{{{5w^2=A}}}
{{{w=sqrt(A/5)}}}
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{{{L=5w}}}
{{{L=5*sqrt(A/5)}}}
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The question asks for p, or perimeter.
{{{p=2w+2L}}}
{{{highlight_green(p=2*sqrt(A/5)+2*5*sqrt(A/5))}}}
You can adjust this as {{{(2+2*5)sqrt(A/5)}}}
{{{p=12*sqrt(A/5)}}}----which should be easier.


Finish using the given value for A=45, and evaluate p.