Icosahedron Calculator | Edge length, Surface Area, Volume, Exsphere, Midsphere, Insphere Radius

About This Tool:

Here you can find the edge length, surface area, volume, exsphere radius, midsphere radius and insphere radius of Icosahedron using this Icosahedron tool.

Icosahedron Formula:

Surface Area (A) = 5 * a² * √3
Volume (V) = 5 / 12 * a³ * ( 3 + √5 )
Exsphere Radius r_e) = a / 4 * √10 + 2 * √5
Midsphere Radius (r_m) = a / 4 * ( 1 + √5 )
Insphere Radius (r_i) = a / 12 * √3 * ( 3 + √5 )
Volume diagonal = 2 * r_e

Icosahedron Calculator

Edge Length (a) :
Volume (V) :
Surface Area (A) :
Exsphere Radius (re) :
Midsphere Radius (rm) :
Insphere Radius (ri) :
Round to   4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15   decimal places.
	* Enter any one known value