Estimation question
You walk around the Earth, 8 hours a day at 5 km/h. How many days does it take?
How close can you get? Make your own guess and earn points before you look at the answer.
Guess it yourself and earn points
Show the answer and the reasoning
The answer
1,000 days
About 1,000 days. Almost three years of walking.
How to get there
- 8 h × 5 km/h = 40 km a day
- 40,075 km ÷ 40 km
- = about 1,000 days
Source: Calculation with 40,075 km at the equator
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