The answer depends on if the triangle is a 45-45-90 triangle or a 30-60-90 triangle. If it is a 45-45-90 triangle, then we would use the Pythagorean Theorem (a^2+b^2=c^2). plugging in the hypothesis, the equation would be a+b=36. If the legs are equal in the triangle, then each side would be the sqrt of 18 inches. Simplified, it would be 3r2.
