https://github.com/jnweiger/inkscape-svg2fcsketch will keep circles and arcs intact during export to fcstd file format of FreeCAD.
It's a work in progress, and the developer wants to tell us more about it at the Hackfest in Kiel this week.
New Inkscape extension for exporting to FreeCAD file format
New Inkscape extension for exporting to FreeCAD file format
Something doesn't work? - Keeping an eye on the status bar can save you a lot of time!
Inkscape FAQ - Learning Resources - Website with tutorials (German and English)
Inkscape FAQ - Learning Resources - Website with tutorials (German and English)