– π (pi) is a mathematical constant, approximately equal to 3.14159 If we know the circumference of a circle, we can easily find out its radius by rearranging this formula and solving for ‘r’: r = C / ...

Perhaps the simplest method to find the radius is by using the diameter. The diameter is simply twice the radius, as it is the longest distance across the circle passing through its center. If you are ...

A circle is a shape where every point at its edge is the same distance from the centre. A circular shape or object is one that is in the form of a circle. How many of these circular objects can you ...