I FOUND YOUR COMPLETE QUESTION IN OTHER SOURCES. PLEASE SEE ATTACHED IMAGE. For this case the area is given by: A = (22 + x) * (28 + x) = 722 Rewriting we have: 616 + 22x + 28x + x ^ 2 = 722 x ^ 2 + 50x + 616 - 722 = 0 x ^ 2 + 50x - 106 = 0 Solving the polynomial we have: x1 = 2.04 x2 = -52.04 We take the positive root: x = 2.04 inches: Answer: The width of the border to the nearest inch is: x = 2inches