Rhino export to cad, hatch has no area info

I had a rhino file, and I exported it as a dwg file. But when I opened the dwg file, clicked a hatch, find no area info in PROPERTIES INTERFACE.
why? and how to change ? thank you!

Hello - are you checking area in Autocad or Rhino? In Autocad, I have no idea …

-Pascal

yes,I want to check in CAD…