Question 1013830
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W=width; L=length=W+12cm; H=height=5cm; V=volume<=1900cm^3
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{{{L*W*H<=1900cm^3}}}
{{{(W+12)(W)(5)<=1900cm^3}}}
{{{W^2+12W<=380cm^3}}}
{{{W^2+12W-380cm^3<=0}}}