Answer & explanation
The official answer, with Fermi’s reasoning step by step.
Answer & explanation
Official answer
360
people
How to estimate it
Fermi’s official “Napkin math”
The Colosseum is an oval about two football pitches long and a bit narrower, so call it 170 meters across on average. The way around is about 3 times that, roughly 500 meters. How much line does one person cover with arms out? About a meter and a half.
- Average width across
- ≈ 170 m
- Around the oval, × 3
- ≈ 500 m
- 500 ÷ 1.5 m
- ≈ 330 people
The Colosseum is an oval about two football fields long and a bit narrower, so call it 550 feet across on average. The way around is about 3 times that, roughly 1,700 feet. How much line does one person cover with arms out? About 5 feet.
- Average width across
- ≈ 550 ft
- Around the oval, × 3
- ≈ 1,700 ft
- 1,700 ÷ 5 ft
- ≈ 340 people
Rounded assumptions may give a slightly different estimate. The official answer above is the game’s reference value.
Source calculation & reference
- Colosseum outer perimeter (189 × 156 m oval)
- ≈ 545 m
- Line per person, hand to hand
- ≈ 1.5 m
- 545 ÷ 1.5
- ≈ 360 people
Reference cited by Fermi: Colosseum dimensions (189 × 156 m, original perimeter 545 m) per Wikipedia and World History Encyclopedia, with 1.5 m of line per person hand to hand
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