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?
![Sandra tried to use Cavalieris principle to show that the two figures have the same volume The base areas are the same Therefore corresponding crosssections hav class=](https://us-static.z-dn.net/files/d39/bcb3be73d9edb97a1aad8bbdd1a2de2c.png)
![Sandra tried to use Cavalieris principle to show that the two figures have the same volume The base areas are the same Therefore corresponding crosssections hav class=](https://us-static.z-dn.net/files/d71/18d78d27b4a7d14d688e4710ec2d4cac.png)