Cylinder Tool

Ribbon menu Bodies tab Solids container Cylinder Tool
or
(Classic) Build Bodies/Geometry Cylinder Tool
Creates a Solid geometry with a circular base. You draw the cylinder’s centerline and Adams View creates the cylinder with a radius 25% of the length of the centerline. Before you draw a cylinder, you can also specify its length and radius:
The Cylinder tool draws the centerline of the cylinder in the plane of the screen or the Working grid, if you have it turned on.
For the option:
Do the following:
New Part/Add to Part/On Ground
Select either:
New Part - Creates a new part.
Add to Part - Adds the cylinder to another part in your model.
On Ground - Adds the cylinder to ground.
Note: Add the geometry to ground if the geometry does not move or influence the simulation of your model. For example, if you are simulating a car driving around a race track, the geometry that defines the race track can be added to ground.
Length
Enter the length of a cylinder, if desired.
Radius
Enter a radius, if desired.
If you do not enter a radius, Adams View creates the cylinder with a radius 25% of the length of the center line.
Note:  
Two hotpoints appear after you draw a cylinder. One lets you modify the length of the cylinder and one lets you set its radius. For more information on modifying geometry using hotpoints, see Using Hotpoints to Graphically Modify Geometry.