A human hair has a diameter of about 4x10^-3 inches. A fingernail is about 0.011 inches thicker. How thick is a fingernail? Write the answer as a decimal to 3 places.

Answer 1

To find the thickness of a fingernail, we need to add the diameter of a human hair and the increase in thickness of a fingernail.

Diameter of a human hair = 4x10^-3 inches
Increase in thickness of a fingernail = 0.011 inches

Thickness of a fingernail = Diameter of a human hair + Increase in thickness of a fingernail
Thickness of a fingernail = 4x10^-3 + 0.011
Thickness of a fingernail = 0.015 inches

Therefore, the thickness of a fingernail is 0.015 inches.