Twelve disks with the given measurements are stacked on top of each other. which expression does not give the volume of the cylinder that is formed?

The correct option is 2.

Step-by-step explanation:

It is given that twelve disks with the given measurements are stacked on top of each other.

From the figure it is noticed that the radius of the disk is 3 cm and the height of disk is 1 cm.

The volume of a cylinder is

Volume of a disk is

The volume of 12 disk is

Option 1 represents the volume of stack.

The volume is 12 times of the volume of disk.

Option 3 represents the volume of stack.

The volume of a prism is the area of base multiplied by height.

Option 4 represents the volume of stack.

Therefore option 1, 3 and 4 are incorrect. So option 2 is correct.

i dont get it. where are the "descriptions"?