It's not why...it can be the outcome of ones decisions of getting protection or just want to spend their last minutes with their family and friends
Use the Pythagorean Theorem to check out these possibilities (which you really do need to share here).
Note that 13^2 = 12^2 + 5^2, so 12 and 5 are a possible set of side lengths here.
(8, 11) is the correct solution. x = 8, y = 11
Plug it in:
11-8=3
That's correct.
The answer is 93 years old.
It reveals whether the answers will be negative, and how many solutions the equation will have.