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Investigate the relationship between features of circles such as circumference, area, radius and diameter. Use formulas to solve problems involving circumference and area (ACMMG197)


Source: Australian Curriculum, Assessment and Reporting Authority (ACARA)

Definition of a circle

A circle is the path traced out by a point, moving in a plane, that is always a fixed distance (the radius) from a fixed point (the centre).

Circle with centre labelled 'O' and 'centre'. Radius drawn and labelled 'radius'