[填空题]
Calculate the moment of inertia of z l2y))hvls-*d4kxs6avra (i a bicycle wheel 66.7 cm 2u u,mhjii-z(c geps 93c1nz+ in diameter. The rim and tire have a combined mass of 1.25 kg. The mass of the hub can be ignored (whyu1 ( i2gizcz3h ,upej+mcn 9s-?). $kg \cdot m^2$