Obect data 'Radius of ARCALIGNEDTEXT is always way off - how to get true radius?

[hencoop]

I have discovered that the 'Radius property of ARCALIGNEDTEXT objects has nothing to do with the radius of a circle through any of the definition points of the individual text characters.  It has been in the neighborhood of 50X the actual radius (+-5X or so) for the objects I have examined and it is not the actual radius multiplied by DIMSCALE or anything else I've thought to try.

Does anyone know how to extract the actual radius of ARCALIGNEDTEXT objects?

Thanks!

[Ranjit_Singh · Accepted solution]

(cdr (assoc 40 (entget (car (entsel "\nSelect arc-aligned text :")))))

[hencoop]

Simple - to the point, thanks!  That'll serve my needs very well...

But then my OCD asks, why is (VLAX-GET-PROPERTY (VLAX-ENAME->VLA-OBJECT (car (entsel "\nSelect arc-aligned text :"))) 'Radius) returning 2509.14?

when (cdr (assoc 40 (entget (car (entsel "\nSelect arc-aligned text :"))))) returns 43.7928?

Do you know why there is a difference?