Question

If you are trapped in a room of dimension 10m x 10m x 10m, how long can you survive? Assume that the room is completely sealed and nothing (not even air) can come inside.

Answer 1

We can survive for around 1 week

Explanation:

Volume of room = 10 * 10 * 10  = 1000 m³

1 m³ = 1000  litre

Hence Volume of room = 1000 * 1000  = 10⁶  Litre

% of oxygen in air = 21 %

Oxygen  volume = (21/100) * 10⁶  Litre

= 21 * 10⁴ Litre

Inhaled air is about 20-percent oxygen. Exhaled air is about 15-percent oxygen.  

Oxygen required per day = 550 litre

Air enough to survive for = 21 * 10⁴/550  = 382 day

Without food we can survive for  20-30 days

Without Water We can survive for around 1 week

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