[填空题]
Calculate the moment of okc+9ipn 5 g(iinert s e*iw+dzlxjyf+ao1,gl8rz c ) .y0g(ia of a bicycle wheel 66.7 cm in diameter. The rim and tire have a combined mass of 1.25 kg +y+ ogz80., )y1fj r*zdwxlgais ecl(. The mass of the hub can be ignored (why?). $kg \cdot m^2$