The dimensions are 60 yards by 100 yards Proof: Let the wdth be x and the length be x+40 x(x+40)=6000 x²+40x=6000 x²+40x-6000=0 use the quadratic formula x= -40+ or - √40²-4*1*-6000 x= 60, -100 but distance but be positive so the dimensions are 60 yards by 100 yards