Gacan ingiriis Radius oo loola jeedo Dhexroorka Barkiis, waxa ayna tahay Xariiqa bar dhexaadka Wareega Goobo ama Kubad r = c 2 π {\displaystyle r={\frac {c}{2\pi }}} File:Guubo.JPG Gacan ka goobo Bed A Waa r = A π . {\displaystyle r={\sqrt {\frac {A}{\pi }}}.}