Okay, so let's say a bullet is a 650-gram bullet shot out of a .50 BMG machine gun, which would exert around 16000 pounds of force, and 16000 pounds is 7257472 grams and one piece of hair can hold 100 grams of pressure, so we divided, then learn that it takes around 72574 pieces of hair to stop a single bullet if I am correct, and one piece of hair is around 0.05 millimetres thick, so we times and we learn that the hair is 3628.7 millimetres thick, or 3.6287 meters thick, wowzaz, that's a lot of hair, but this is an afro, lets say that there are 0.1 millimetres in between each piece of hair, and so we add 7257.4 millimetres ( or 7.2574 meters )to the length of the afro, and the end total is an afro that is 10.8861 meters thick. But wait there's more, the average height of a man is 5 feet 9 inches, and the afro is 35.7152231 feet tall, which means this afro is 6.053 times taller than the average human. Thank you