Question 905239
{{{l=3w}}}
{{{A=27}}}
{{{A=lw}}}
Substitute l=3w
{{{A=3w*w}}}
{{{A=3w^2}}}
{{{27=3w^2}}}
{{{27/3=(3*w^2)/3}}}
{{{9=w^2}}}
{{{w=3}}}
w=-3 (reject)
{{{l=3*3=9}}}
{{{P=2(l+w)}}}
{{{P=2(9+3)}}}
{{{P=24}}}
Ans:24 inches