Circles and Sectors (Leaving Cert Mathematics): Quizzes

$16$ cm

$\pi r^2$

$2\pi r$

Calculator's $\pi$ key

A slice between two radii and an arc

Fraction of the whole circle

$\frac{x}{360} \times \pi r^2$

$\frac{x}{360} \times 2\pi r$

$\frac{100}{\pi}$

$\frac{\pi r^2}{2}$

$\frac{\pi r}{2}$

Square units (e.g., cm²)