Gilover: Cudahiya di navbera guhartoyan de

 

 

<math>s = \pi \, d = 2 \pi \, r.</math>

 

<math>q = \pi r^2 = \frac{\pi \, d^2}{4} \approx 0{,}7854 \; d^2.</math>

[[Kategorî:Geometrî]]