Question 1009101
It has to be the next largest integer greater than the Pythagorean distance of legs 10 and 15...
c^2 = a^2 + b^2 = 15^2 + 10^2 = 225 + 100 = 325
Since c is the largest side, and the triangle is obtuse, c must be opposite the obtuse angle.
The square root of 325 is a touch over 18, so the answer must be
19 inches.