<Dl> <Dd> r g axis 2 = I axis m (\ displaystyle r_ (\ mathrm (g) (\ text (axis))) ^ (2) = (\ frac (I_ (\ text (axis))) (m))) </Dd> </Dl> <Dd> r g axis 2 = I axis m (\ displaystyle r_ (\ mathrm (g) (\ text (axis))) ^ (2) = (\ frac (I_ (\ text (axis))) (m))) </Dd> <Dl> <Dd> r g axis = I axis m (\ displaystyle r_ (\ mathrm (g) (\ text (axis))) = (\ sqrt (\ frac (I_ (\ text (axis))) (m)))) </Dd> </Dl> <Dd> r g axis = I axis m (\ displaystyle r_ (\ mathrm (g) (\ text (axis))) = (\ sqrt (\ frac (I_ (\ text (axis))) (m)))) </Dd>

The radius of gyration of a circle of radius r is equal to