Cut in pipe needed

I am new to Solidworks and have been using AutoCAD for numerous years.I have a pipe that will run on the x axis that will sit in a pipe running on the y axis. I need to trim out the area from the x axis pipe so y axis pipe can sit in there. The x axis pipe will be larger. Do i need to draw both pipes or can I just draw/extrude x axis pipe and tell it the diameter needed to cut?

Thanks

SolidworksGeneral