[填空题]
Calculate the moment of inertia of a bicycle whmmp /0vyx8bt qnuv4 7d k23mm0eel 66.7 cm in diameter. The ri yl;uw772vc* hej8j5zlg; onmm and tire have a combined mass of 1.25uz7*ecnljv l ow5g hy;jm28;7 kg. The mass of the hub can be ignored (why?). $kg \cdot m^2$