S = πAkc³/2hG

Where,

S = Entropy of a Black Hole

A = Area of the Event Horizon

k = Boltzman’s Constant

c = Speed of Light

h = Planck’s Constant

G = Newton’s Constant

G = 6.674 08 x 10⁻¹¹ m³·kg⁻¹·s⁻²

h = 6.626 075 5 x 10⁻³⁴ J·s

h = 4.135 669 2 x 10⁻¹⁵ eV·s

k = 1.380 658 x 10⁻²³ J/K

k = 8.617 385 x 10⁻⁵ eV/K

c³ = 2.69440024 × 10²⁵ m³/s³

Entropy of a Black Hole

https://physics.stackexchange.com/questions/387304/magnitude-of-black-hole-entropy

To calculate A the Area of the Event Horizon, A can be calculated….

Black Hole Parameters

https://space.geometrian.com/calcs/black-hole-params.php

What is a cross section?

https://www.quora.com/What-is-a-cross-section/answer/Krishna-Gangadhara?share=7868bf1f&srid=5BcRO

Classical and Quantum Black Hole Cross Section

https://www.researchgate.net/publication/222692263_Classical_and_quantum_cross-section_for_black_hole_production_in_particle_collisions

Total Destructive Interference Nodal Points and Dark Matter

https://www.quora.com/profile/Rickey-Estes/Electromagnetic-Field/Dark-Matter-and-Dark-Energy-1?share=feecb3bc&srid=5BcRO

Short Wavelength High Energy Length Contracted Electron Cross Section(s)

https://www.quora.com/Is-length-contraction-only-a-result-related-to-observation-or-a-real-contraction/answer/Kirsten-Hacker?share=25fe22f5&srid=5BcRO

https://www.quora.com/Is-length-contraction-only-a-result-related-to-observation-or-a-real-contraction/answer/TR-Livesey?share=595ed886&srid=5BcRO

Phillip Freeman has a good answer to the question…

What is an annihilation cross section?

https://www.quora.com/What-is-an-annihilation-cross-section/answer/Philip-Freeman-3?share=e2b1a7ae&srid=5BcRO

The case for mini black holes

12 November 2004

https://cerncourier.com/the-case-for-mini-black-holes/

http://superstringtheory.com/blackh/blackh5.html

…and finally, I decided to ask quora users for more information, due to numerous conflicting results. I hope that this helps you understand and be able to accurately calculate the entropy of a black hole, for a referrence and as a study tool…

“Can you recommend a good source of information for calculating the entropy of a black hole, with examples worked out step by step?”

https://www.quora.com/Can-you-recommend-a-good-source-of-information-for-calculating-the-entropy-of-a-black-hole-with-examples-worked-out-step-by-step?share=9d716592&srid=5BcRO

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I enjoy studying and writing articles about science and technology.
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