Arcs are an important aspect of geometry, physics, trigonometry and design work. However, curved lines are much more difficult to measure than straight lines, which is why it's important to ...

An alternate idea, using integral calculus is to define π as the arc length of the upper half of the circle x² + y² = 1, the formula for which is ...

GCSE Eduqas Circles, sectors and arcs - Eduqas Arc length Circles are 2D shapes with one side and no corners. The circumference is always the same distance from the centre - the radius. Sectors ...