Question 169606
let x=square size


(11-2x)(14-2x)=80


FOILing __ 154-50x+4x^2=80


subtracting 80 __ 4x^2-50x+74=0


dividing by 2 __ 2x^2-25x+37=0 __ use quadratic eqn to find x





ANSWER BELOW






x=1.72 (approx)