You will be given a definition of a task first, then some input of the task.
The goal of this task is to translate questions in English into Catalan. The requirements of the translation is that: the text must be equivalent in meaning, the text must not be ambiguous, and the text must be written as a question

What is used to calculate cross section area in the volume of an object?
Output:
Què s’associa amb les forces normals?