How to get the area of a static mesh which is stored in the .UDatasmith File as a variable in blueprint?

Hello Everyone,

I exported a CAD file using Datasmith Export plugin and it generated me a .UDatasmith file, Asset folder containg UMesh and a log file. After opening the .UDatasmith file in a text editor I have seen that it contains information about static mesh like this as shown in below figure.

I am concerned about this line:
<Size a="48504.214844" x="20.700001" y="20.400002" z="404.999634"/>

Here what does these a,x,y,z represent? Is a is the area? If it is is there a way to get that value as a variable using blueprint?

Thank you!