For the given statement first draw a diagram,In this diagram, we can observe thatHeight (h1​) of each conical part =2 cmHeight (h2​) of cylindrical part 12−2−2=8 cmRadius (r) of cylindrical part = Radius of conical part = 23​ cmVolume of air present in the model = Volume of cylinder + 2× Volume of a cone =πr2h2​+2×πr2h1​=π(23​)2×8+2×31​π(23​)2(2)=π×49​×8+32​π×49​×2=18π+3π=21π=21×722​=66 cm2