The volume of the circumscribed ball of a cube is 32 pies / 3. How about the edge length of the cube?

The volume of the circumscribed ball of a cube is 32 pies / 3. How about the edge length of the cube?

The volume of the sphere v = (4 / 3) π R ^ 3 = 32 π / 3, so the radius r = 2
The volume diagonal of a cube is the diameter of the circumscribed sphere, so the volume diagonal = 4
The volume diagonal of a cube is three times the root of its edge length, so edge length 4 / root 3 = (4 / 3) root 3
You can draw a picture of the relationship between these edges