Question 170703
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We know {{{P=2(L+W)}}}, working eqn
But, {{{L=5+2W}}}, subst in our working eqn
{{{P=2(5+2W)+2W}}}
{{{82ft=10+4W+2W}}}
{{{82-10=6W}}}
{{{cross(72)12/cross(6)=cross(6)W/cross(6)}}}
{{{highlight(W=12ft)}}}
Also, {{{L=5+2(12)=5+24=highlight(29ft=L)}}}
In doubt? Go back working eqn,
{{{82=2(29+12)}}}
{{{82=2(41)}}}
{{{82ft=82ft}}}
Thank you,
Jojo</pre>