# Formulas of Arc Length

Some important results and formulas regarding the arc length of the curve are listed here.

**1.** The arc length for a Cartesian curve is given by

**2.** If the parametric form and is given, then

**3. **The arc length of the equation of a curve in a polar system i.e., , is given by

**4.** If the equation of the curve is given by , then arc length is given by