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3 years ago

A human hair is approximately 40 microns (um) wide. If 1 um is equal to 10

Mathematics

1 answer:

Natasha2012 [34]3 years ago

5 0

Answer:

D 40,000nm

Step-by-step explanation: 1nm/10^-9m * 10^-6/1um = 10^3 nm/um

Therefore in 40 microns there are:

40um * 10^3 nm/um = 40 * 10^3 nm = 40,000 nm

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k = 4 × 9 = 36

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