Step-by-step explanation:
Hello! Remember you have to write complete questions in order to get good and exact answers. Here you haven't provided any figure, so I could help you providing my own triangle (isosceles triangle) which is shown below. We know that the area of a triangle is defined by:
So our goal is to find x. Since this is an isosceles triangle, we can use Pythagorean Theorem, therefore:
Finally, the missing side are: