area of a square=length times lenght or legnth^2 area=36 so legnth=√36=6 perimiter of square=legnth times 4 since all sides are same legnth if each side legnthened by 4 feet then original premiter=4 times 6=24 new perimiter=4 times (6+4)=4 times (10)=40 the new perimiter is 40 ft