How to dimension overall length of a part with an arc

I have this simple part that I need to put an "unbent" length on.  Is it possible to do this without unbending?  I can put the dimensions of the 3 segments on it no problem but they really want the overall length.  I do have the overall length in the BoM, but they want it to be on the part as well!!

Thanks for any suggestions.

Colleen

SolidworksDrawings And Detailing