Create new document and switch workbench to Part workbench.
Click Box and Cylinder to create solids.
Click Booleans, then Boolean Operation dialog will be opened at Task tab in Combo View.
Select a type of operation at [Boolean Operation], Box at [First Shape] and Cylinder at [Second Shape]. Click
to execute the boolean operation.Operation results are shown below.
Click
to finish Boolean Operation dialog.Note: Executed boolean operation can be canceled. Select the operation result part in model tree and click [Delete] in right click menu to cancel operation.