BdMO National 2013 Junior Q. 2:
Two isosceles triangles are possible with 120 square unit area of each and length of edges are integers. Such one is with 17, 17 and 16 unit edges. Determine the length of edges of second one. [Hint: In $ \bigtriangleup ABC $ if $ AB = AC $ and $ AD $ is perpendicular to $ BC $ then $ BD = CD $ .]
Please help me, or just give me a hint to solve this problem.