[填空题]
Calculate the moment of iner3j 4iphvwrtzb w5hbc hj*2t; zz*,1 2ptia ofozbmhq31 .o +ogzcs2a1o;m v29go 8z j a bicycle wheel 66.7 cm in diameter. The rim and tire av+g9;3 18qgz22m oc.zbjshm z ooo1ohave a combined mass of 1.25 kg. The mass of the hub can be ignored (why?). $kg \cdot m^2$