6. We will have that if we rotated the rectangle and then determined the cross-section shape, the volume would be given by the following expression:
![V=l\cdot w\cdot l\Rightarrow A=l^2\cdot w](https://img.qammunity.org/2023/formulas/mathematics/college/r9we8vpea9de1c8svwahj4uym7pz2pvitt.png)
Now, we replace the values:
![V=(18)^2\cdot(10)\Rightarrow V=3240](https://img.qammunity.org/2023/formulas/mathematics/college/ew1tob94cn7y82m2qvcmbrt93av0zm14um.png)
So, the volume of the shape delimited by the cross-section would be 3240 cubic inches.