Investigate the relationship between features of circles, such as the circumference, radius and diameter; use formulas to solve problems involving circumference (ACMMG197)
Outcomes

Develop and use the formulas to find the circumferences of circles in terms of the diameter d or radius r:
Circumference of a circle = pi x d
Circumference of a circle = 2 x pi x r
Examples

Find the perimeters of simple composite figures consisting of two shapes, including quadrants and semicircles
Examples