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moment of inertia using autocad

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Hi !
 
how about using the command    "regions"   instead of  "solid" ?
 
I tried it 1min ago and the autocad said  like below !
 
 
----------------   REGIONS   ----------------
 
 
Area:                    200.0000
Perimeter:               60.0000
Bounding box:         X: -10.0000  --  10.0000
                      Y: -5.0000  --  5.0000
Centroid:             X: 0.0000
                      Y: 0.0000
Moments of inertia:   X: 1666.6667
                      Y: 6666.6667
Product of inertia:  XY: 0.0000
Radii of gyration:    X: 2.8868
                      Y: 5.7735
Principal moments and X-Y directions about centroid:
                      I: 1666.6667 along [1.0000 0.0000]
                      J: 6666.6667 along [0.0000 1.0000]