Goobo ama meeris waa shay kamid ah xisaabta. Waana 360 darajo, wareega dhameestiran. Bartamaha wareega ilaa qarkiisa waxaa loogu yeeraa wareega raadius.wareega qarkiisa ilaa qarka kale neh waxaa u maleenaa in loogu yeero (Siiwade) Tusaale Waxaa loo cabiri karaa Afar geeslaha in la isugeeyo dhamaan Xaglahiisa. Wareega Goobo Waxaa lagu helaa P = 2 ⋅ π ⋅ r {\displaystyle P=2\cdot \pi \cdot r} Ama P = d ⋅ π {\displaystyle P=d\cdot \pi } Sida P Waa dhererka Wareegga r Gacan Goobo d Dhexroor Goobo