[填空题]
Calculate the moment of inertia of*nq8 x 2wwha9il bat., a bicycleeb5r )vupvs,4os1;v gwcasnwi1 x:1 + wheel 66.7 cm in diameter. The rim and tire have a combined mass of 1.25 kg. Theca1e:1g4)w+nvv i s15 ;bvosxsu rp,w mass of the hub can be ignored (why?). $kg \cdot m^2$