Higher; Circles and graphs Finding the equation of a circle. The equation of a circle can be found using the centre and radius. The discriminant can determine the nature of intersections between ...

Can you measure the area of a circle and use that to find a value for Pi? Getty Images. Save. Save. It is once again Pi Day (March 14 or 3/14 in USA date format). I would just like to ...

The flat wooden disc can be arranged as a circle which is divided into six wedges that are hinged together along the perimeter. These may be rearranged to form what the model calls a “rhomboid.” One ...