The circumference of a circle plays an important role in mathematical calculations, science and engineering. Understanding how to calculate it is an essential skill that often simplifies matters in ...

Learn about the definition of pi in relation to a circle with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

When the user enters a valid radius, the application calculates and displays the circumference and area of the circle to the nearest 2 decimal places. The application prompts the user to continue.

Spread the loveIn everyday life, we often come across circular objects, from wheels to plates and bracelets. You might find it useful to know just how big these circular objects are. Understanding how ...

How to calculate the area of a circle? Area of circle calculator online ¡Circular surfaces! We explain area of a circle formula = π × radius², and more.

Ancient Greeks made many impressive astronomical discoveries, including when Eratosthenes calculated the circumference of the Earth.