[填空题]
Calculate the moment of i8buvdh 7fdq*5z q +0 qjqsl,,bnertia of a bicycle wheel 66.7 cm in diamet6hj;yk w 2(- s8ue0ibwzrsry-er. The rim and tire havsyhk;-b sw8wj-r6(ei2zyu r0e a combined mass of 1.25 kg. The mass of the hub can be ignored (why?). $kg \cdot m^2$