If I establish a cross section shape for a structural beam, how can I use Rhino to give me a section modulus?

This is what I get from the ‘area moments’ command;

Area = 2.14778953 (+/- 1e-09) square feet

Area Centroid = 48.7607237,-0.116125533,4.10834046 (+/- 1e-08,1e-10,5.5e-09)

Area Moments:

First Moments

x: 104.727772 (+/- 1e-07)

y: -0.249413205 (+/- 1e-10)

z: 8.82385063 (+/- 1.2e-08)

Second Moments

xx: 5107.30953 (+/- 1e-06)

yy: 0.0289632414 (+/- 1e-11)

zz: 37.0935158 (+/- 1.4e-07)

Product Moments

xy: -12.1615684 (+/- 1e-08)

yz: -1.02467436 (+/- 1.4e-09)

zx: 430.238757 (+/- 6.2e-07)

Area Moments of Inertia about World Coordinate Axes

Ix: 37.1224791 (+/- 1.4e-07)

Iy: 5144.40304 (+/- 1e-06)

Iz: 5107.33849 (+/- 1e-06)

Area Radii of Gyration about World Coordinate Axes

Rx: 4.15740778 (+/- 8.1e-09)

Ry: 48.940864 (+/- 1e-08)

Rz: 48.76424 (+/- 1e-08)

Area Moments of Inertia about Centroid Coordinate Axes

Ix: 0.842133304 (+/- 4.8e-08)

Iy: 1.54970531 (+/- 8.4e-08)

Iz: 0.707572002 (+/- 3.5e-08)

Area Principal Moments of Inertia about Centroid and Principal Axes

I1: 0.705052224 , Direction ( 0.990933965, 0 ,-0.13434983)

I2: 1.26764532e-34 , Direction ( 0, 1 ,0)

I3: 0.844653082 , Direction ( 0.13434983, 0 ,0.990933965)

Area Radii of Gyration about Centroid Coordinate Axes

Rx: 0.626173322 (+/- 1.8e-08)

Ry: 0.849432159 (+/- 2.3e-08)

Rz: 0.573970351 (+/- 1.4e-08)