Question 904805
L=2w, and let p be the perimeter of both the rectangle and the square.


s = side length of the square.
{{{s^2=81}}}
{{{highlight(s=9)}}}, as a result.
{{{p=4*9=36}}}


{{{2w+2L=36}}}
{{{2w+2(2w)=36}}}
{{{6w=36}}}
{{{highlight(w=6)}}}.