Question 1091140
{{{18*ft^2*12*12*(in/ft)(in/ft)}}}


{{{2592*in^2}}}, area of the board in square inches.


A good way to find one combination of dimensions using L length and w width may be  {{{system(wL=2592,L/w=(1+sqrt(5))/2)}}}.


{{{w((1+sqrt(5))/2)w=2592}}}


{{{w^2=(2*2592)/(1+sqrt(5))}}}


{{{highlight(w=40)}}}, if taken just to the nearest whole inch.  
{{{L=2592/40}}}
{{{highlight(L=64.8)}}}, inches.
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