"Geometrical Properties of Regular Hexagon
'<hr /><div style="max-width:120mm"><img style="height:135pt;" alt="hexagon.png" class="side" src="https://calcpad.eu/media/mechanics/sections/hexagon.png"></div>
'Dimensions
a = ?'%u
h = sqr(3)*a'%u
'Area
A = 1.5*a*h'%u<sup>2</sup>
'Centroid
y_c = a'%u
z_c = h/2'%u
'Perimeter
P = 6*a'%u
'Second moments of area
'<p><i>I</i><sub>z</sub> ='I_y = 5*sqr(3)*a^4/16'%u<sup>4</sup></p>
'Polar moment of area
I_x=2*I_y'%u<sup>4</sup>
'Radii of gyration
'<p><i>r</i><sub>z</sub> ='r_y = sqrt(I_y/A)'%u</p>
r_x = sqrt(I_x/A)'%u1