{
  "source": "analytic",
  "method": "box 60x40x20 minus centred through cylinder r=6: V = abc - pi r^2 c, A = 2(ab+bc+ca) - 2 pi r^2 + 2 pi r c; hole is centred so the centroid stays at the box centre",
  "body_count": 1,
  "volume_mm3": 45738.05328941535,
  "area_mm2": 9327.787565803084,
  "center_of_mass": [
    30.0,
    20.0,
    10.0
  ],
  "bbox": {
    "min": [
      0.0,
      0.0,
      0.0
    ],
    "max": [
      60.0,
      40.0,
      20.0
    ]
  },
  "faces": 7
}