To calculate the length of x, we need more information about the context in which x is being used.
The length of x could refer to anything from finding the length of a side in a triangle, to a distance between two points on a graph, to solving for an unknown in an equation.
Here are a few scenarios where you might find the length of x:
1. In a right triangle, using the Pythagorean theorem: If x represents the length of the hypotenuse and you know the lengths of the other two sides, a and b, then you would calculate the length using (x^2 = a^2 + b^2). Solve for x by taking the positive square root of the sum of the squares of a and b.
2. In a rectangle, if x is the length of one side and you know the perimeter or area and the length of the other side, you could solve for x by using the formulas for the area (A = width * length) or the perimeter (P = 2*width + 2*length).
3. On a coordinate plane, if x represents the distance between two points (x1,y1) and (x2,y2), you would use the distance formula: d = √((x2 - x1)^2 + (y2 - y1)^2).
4. In algebra, if you have an equation or a system of equations with x as one of the variables, you would solve for x using algebraic methods like substitution, elimination, or factoring, depending on the specific equation or system.
Without additional information about the scenario or context in which the length of x is being sought, it is not possible to provide a finite answer or formula. Please provide further details or specific parameters relating to the problem at hand, so I can assist you properly in finding the length of x.