An average strand of human hair has a diameter of roughly?

Please wait…

1. An average strand of human hair has a diameter of roughly?

75,000 metres

75 metres

About 7.5 × 10⁻⁵ metres

About 7.5 × 10⁻⁹ metres

 Loading…

 

A typical human hair measures roughly 75 micrometres across, which works out to about 7.5 × 10⁻⁵ metres.