Consider the following two prisms 14 7 6 15 Choose 1 answer 5 Sandra tried to use Cavalieri s principle to show that the two figures have the same volume The base areas are the same Therefore corresponding cross sections have the same area The prisms have the same height So the volumes must be the same What is the first mistake Sandra made 114 The base areas are not the same It isn t true that corresponding cross sections have the same area