Question 326375
{{{W/L=3/7}}}
{{{W=(3/7)L}}}
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{{{L*W=84}}}
{{{L*(3/7)L=84}}}
{{{L^2=84*(7/3)}}}
{{{L^2=196}}}
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{{{L=14}}}ft
{{{W=(3/7)14=6}}}ft