Length of an Arc and Area of a Sector (VCE SSCE General Mathematics): Quizzes

A curved section of a circle's edge

$s = \frac{\pi r\theta}{180}$

20.9 cm

A wedge-shaped region of a circle

The minor sector

$A = \frac{\pi r^2\theta}{360}$

240°

104.72 cm²

Arc: cm, Sector: cm²

Arc: 180, Sector: 360