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 ...

The arc length is 1 4 × π × 8 = 2 π. Rounded to 3 significant figures the arc length is 6.28cm. The formula to calculate the arc length is: arc length = angle 360 × π × d ...

GCSE AQA Circles, sectors and arcs - AQA 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 ...