Question 990608
Length L, width w;
{{{system(L=w+3,wL=52-6*6)}}}


{{{w(w+3)=52-36}}}
{{{w^2-3w=56-40=16}}}
{{{w^2-3w-16=0}}}


{{{w=(3+sqrt(9+4*16))/2}}}

{{{highlight(w=(3+sqrt(73))/2)}}}