Question 173809
{{{A=LW}}}
but, {{{L=8+4W}}}
Then, {{{3200=(8+4W)(W)}}}
{{{3200=8W+4W^2}}}
{{{4W^2+8W-3200=0}}}, divide the whole eqn by 4:
{{{W^2+2W-800=0}}}
Let {{{W=x}}}, solve by Quadratic:
*[invoke quadratic "x","1","2","-800"]
.
{{{highlight(W=27.3ft)}}}
{{{L=8+4(27.3)=highlight(117.2ft)}}}
check;
{{{3200=27.3*117.2}}}
{{{3200ft^2=3199.56ft^2}}} close enough
Thank you,
Jojo