Question 1201440
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Dimensions w and L


{{{system(2w+2L=68,and,wL=240)}}}


{{{system(w+L=34,wL=240)}}}

{{{L=34-w}}}
{{{substitute}}}:
{{{w(34-w)=240}}}

{{{w^2-34w=-240}}}
{{{w^2-34w+240=0}}}


discrim, {{{(-34)^2-4*240}}}
{{{196}}}
{{{14^2}}}


{{{w=(34+- 14)/2}}}
w=24,or,w=10