The 'Measure path…' extension in Inkscape 0.48 optionally measures the area, see bug #269002. AFAIU the calculation of the area is based on the functions provided in the bundled python modules, not on the internal 2geom functions which cannot be used from script extensions.
Buliabyak-users wrote:
> Use Effects > Visualize path > Measure path
The 'Measure path…' extension in Inkscape 0.48 optionally measures the area, see bug #269002. AFAIU the calculation of the area is based on the functions provided in the bundled python modules, not on the internal 2geom functions which cannot be used from script extensions.