**Calculate the volume of a regular dodecahedron with an edge length of 10 cm.**

edge length = 10

volume = (( 10 * 10 * 10 ) * ( 15 + ( 7 * sqrt(5) ))) / 4

volume = 7663.119

where,

A = surface area

a = edge length

V = volume

re = exsphere radius

rm = midsphere radius

ri = insphere radius