Calculating Circumference Before we can calculate arc length, we must first understand how to calculate circumference, as well as the relationship between circumference and a circle's (or arc's) ...

Calculate the circumference of the Earth using this equation: Circumference = 360 x distance between your city and the equator / angle of shadow that you measured What value do you get?

The circumference of a circle is calculated using the formula: circumference = π × diameter, which can be written as c = π d Or: circumference = 2 × π × radius, which can be written as c = 2 ...

How an ancient Greek mathematician calculated the Earth's circumference. In the mid-20th century, we began launching satellites into space that would help us determine the exact circumference of ...

Learn about and revise circles and their properties such as circumference and radius with this BBC Bitesize GCSE Maths OCR study guide.