Discussion
We need to use the formula for the area of a triangle
, and the
fact that the base and the height can be described one in terms of the other.
Solution
Let the short leg be x, and then the longer leg would be 2x + 8.
We are given that the area of the triangle is
, so
or
Since a triangle leg with a negative length measure doesn't make much sense,
exclude the negative value. The short leg measures 8, therefore the long leg
measures 
Check Answer
. Answer checks.