Question 878432
The "6p" was assumed to be a mistake, and that "6" was intended.


Use the numbers as inches and then after solving, convert to the units you believe best.


{{{w=-11+L}}} and {{{wL=6*36*36}}} keeping all units in inches or square inches.
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{{{(L-11)L=6^5}}}
{{{L^2-11L-6^5=0}}}
{{{L^2-11L-7776=0}}}
discrim, 121+4*7776=31225=25*1249
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{{{L=(11+- sqrt(25*1249))/2}}}
{{{highlight(L=(11+5sqrt(1249))/2)}}}----one of the dimension, inches.
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{{{w=-11+(11+5sqrt(1249))/2}}}
{{{w=(-22+11+5sqrt(1249))/2}}}
{{{highlight(w=(-11+5sqrt(1249))/2)}}}---other dimension, inches.