[填空题]
Calculate the moment of ine9x l/6, lyijb1n8o r(tbbsx 2mrtia of a *d77jfimurjm s) f m:7bicycle wheel 66.7 cm in diameter. The rim and tire have a combined mass of 1.25 kg. The mass of thmd:7ifjf7r ) u7 mjms*e hub can be ignored (why?). $kg \cdot m^2$