Parts of a Circle

$$2\pi\ r$$

$$\pi\ d$$

$$\pi\ r^2$$

$$2\pi\ r$$

$$\pi\ r^2$$

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

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

$$\pi\ r^2$$

$$2\pi\ r$$

$$\pi\ d^2$$

$$\pi\ d$$

$$64\pi\ in^2$$

$$81\pi\ in^2$$

$$144\pi\ in^2$$

$$100\pi\ in^2$$

$$49\pi\ in^2$$

$$64\pi\ cm^2$$

$$36\pi\ cm^2$$

$$100\pi\ cm^2$$

$$121\pi\ cm^2$$

$$81\pi\ cm^2$$

141 $$in^2$$

18.8 $$in^2$$

113.1 $$in^2$$

145.3 $$in^2$$

153.9 $$in^2$$

Arc length

Circumference of the circle

Diameter

Radius

$$2\pi\ r$$

$$\pi\ d$$

$$\pi\ r^2$$

$$16\pi\ mi^2$$

$$49\pi\ mi^2$$

$$121\pi\ mi^2$$

$$81\pi\ mi^2$$

$$64\pi\ mi^2$$