Insphere Radius of Octahedron given Midsphere Radius Calculator

Calculate Insphere Radius



Formula

The formula to calculate the Insphere Radius of an Octahedron (\(r_i\)) is:

\[ r_i = \sqrt{\frac{2}{3}} \times r_m \]

Where:

Definition

The Insphere Radius of an Octahedron is the radius of the sphere that is contained by the Octahedron in such a way that all the faces are just touching the sphere.

The Midsphere Radius of an Octahedron is the radius of the sphere for which all the edges of the Octahedron become a tangent line to that sphere.

How to calculate Insphere Radius of an Octahedron given Midsphere Radius

Let's assume the following value:

Using the formula:

\[ r_i = \sqrt{\frac{2}{3}} \times r_m \]

Evaluating:

\[ r_i = \sqrt{\frac{2}{3}} \times 5 \]

The Insphere Radius is 4.0825 m.

Insphere Radius Conversion Chart

Midsphere Radius (m) Insphere Radius (m)
1 0.8165
2 1.6330
3 2.4495
4 3.2660
5 4.0825
6 4.8990
7 5.7155
8 6.5320
9 7.3485
10 8.1650