Please explain the process not just the answer. Thank you!
Let's assume that length of the second leg is x ft, then length of the hypotenuse is
(x + 1) ft.
Now, let's apply the Pythagorean theorem: (x + 1)2 = x2 + 72
x2 + 2x + 1 = x2 + 49
2x = 48 ---> x = 24 ft (second leg)
x + 1 = 25 ft (hypotenuse)