How do you measure the length of a curved line?

[josh wendt]

How do you measure the length of a curved line?

[dxcxdzv]

You need to integrate the function which the curved line represents on a certain interval.

Beware, it's kinda disconcerting when you're not accustomed, and - obviously - when you have no notion of derivative and primitive functions and in trigonometry.

[Typhlosion]

The wikipedia article (https://en.wikipedia.org/wiki/Arc_length) is very straightfoward on explaining. I'm currently studying this and have a test on Wednesday!