Multiple choice general knowledge

If the average man never trimmed his beard, it would grow to nearly -- feet long in his lifetime.

  1. 10

  2. 20

  3. 30

  4. 40
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Human facial hair grows about 0.3-0.5 mm per day. Over a lifetime of ~70 years, this equals approximately 7.6-12.7 meters (25-42 feet). The average of 30 feet is a reasonable estimate assuming moderate growth rates and no trimming. This includes all cumulative growth, not hair length at any single time.

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