If I wanted to fit the entire population of the world in a wrestling ring, how big would it have to be?

Question

If I wanted to fit the entire population of the world in a wrestling ring, how big would it have to be? The assumptions you can make are these:
1. Everyone takes up the same space.
2. The ring is a square
3. Every person touches shoulders with the people standing next to them and they have a small space in front of and behind them. (i.e. everyone's comfortably placed, no one is squashed in)
Please give the dimensions in metres and please show your workings ;)

Answer 1

world population ~6.5 billion (not 2.5 since 30-s)
every person = 2 square feet, so
13 billion square feet
466 square miles

area of ~21 miles by 21 miles

Answer 2

World Population ~ 2.5 Billion

Each person we'll say takes up 2 square feet, thats 2.5 Billion x 2 sq feet = 5 x 10^9 sq feet.

This needs to form a square, so we take the square root.

Answer-: 70711 feet x 70711 feet = 5.000 x 10^9 sq feet

A metre is 39 inches (which is 3 1/13 feet)
If we divide our dimensions by this (i.e. 40/13) we get-:

22981.075 x 22981.075 = 5.2813 x 10^8 sq metres
This is just a rough approximation - but should be good enough for high school stuff.

Answer 3

the population is 6.5 billion people, and for each person to be comfortably placed, the average person's size with a little gap all around them is 150cm^2. 6.5billion*150=975,000billion cm^2, that is 97.5 million metres squared. This is VERY rough estimate.

Answer 4

It’s impossible. We don’t know how many people we have. White people population doesn’t changed noticeably since last century. Shall we count all that asians and negro?

Answer 5

Isle of Man

Answer 6

the same size as a boxing ring

Answer 7

The size of Jupiter and it would be sight to see!

Answer 8

Megalos Titanicos, Australia perhaps, if you want them all seated.

Answer 9

5,7586868,6,69,6,9,6,9,,976,8,5555,5,5,5,5,5,5,5,5,5,5,5,5,5,55,5,324524,54647,47,,376,8 billion cubic centimeters wide and five feet long