I have made the first part on my computer with Solidworks 2017x64 edition and the mass has come out to a different number than the options listed I went over my part about 10 times and couldn't find the problem. Any help would be appreciated. My part file attached and an image of the mass.

Hi,

You might kick yourself for this, but you've used the wrong material! Change from AISI 1020 to Alloy Steel, then this gets you (close enough) to the right answer.

To get the answer exact, you need to link your boss extrude 4 to the equation, you've typed it in which has a slight rounding error (76.67 rather than 76.66666666 etc.) You have the equation there you just haven't used it.

Thanks, Kyle