[填空题]
Calculate the moment of inertia ov 1( g4 cr7yevsnyo+*y87 vndjf g+9w0nbkiqqzpm 5n 83a bicycle wheel 66.7 cm in diameter. The rim and tire have a com8qz0ikn n93+pq wgm5 bbined mass of 1.25 kg. The mass of the hub can be ignored (why?). $kg \cdot m^2$