Question 1051612
Let w be the width of the triangle. Then the length would be 2w. So:
w²+(2w)²=5555²
5w²=(5555)²
w²=6171605
w=2484.27,-2484.27
l=4968.54
w+l=7452..81
7452.81-5555=1897.81 yards saved by walking diagonally. ☺☺☺☺