7,016,000,000 * 54 = 378,864,000,000
Divide that by 950 and you get 398,804,210.5 cubed meters of ground human.
Then to convert that volume into a sphere and get the diameter one can use the following equation (which should work in JavaScript):
pow(398804210.5/((4/3)*pi),1/3)*2
= 913.24
So if someone were to grind up all humans we really would fit into a sphere 913 meters wide.
The numbers
density of ground human = 950kg/m^3 (assumed same as ground beef)
average mass of adult human = 54kg ( low-end since we're not all adults. The average mass of "all humans" would undoubtedly be somewhat lower
number of people = 7,016,000,000
We would make a 913m diameter meatball. Somewhat less than a kilometer.
Divide that by 950 and you get 398,804,210.5 cubed meters of ground human.
Then to convert that volume into a sphere and get the diameter one can use the following equation (which should work in JavaScript):
pow(398804210.5/((4/3)*pi),1/3)*2
= 913.24
So if someone were to grind up all humans we really would fit into a sphere 913 meters wide.
The numbers
density of ground human = 950kg/m^3 (assumed same as ground beef)
average mass of adult human = 54kg ( low-end since we're not all adults. The average mass of "all humans" would undoubtedly be somewhat lower
number of people = 7,016,000,000
We would make a 913m diameter meatball. Somewhat less than a kilometer.
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