The most logical for sphere area is cube surface area times (arc ratio)³ × r² AKA 24 × 0.7928932³ × r² = 11.96342 × r²
It's a simple algebra.
As simple as calculating sphere volume.
Sphere Volume = cube volume times (arc ratio)³ × r³ AKA 8 × 0.7928932³ × r³ = 3.987806 × r³
For any circle related calculations, every side lengths, i.e. 2, becomes 1.5857864.
length, width, hight