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 your answer as a decimal to 3 places
To find the thickness of a fingernail, we need to add the thickness of a human hair (4x10^-3 inches) to the additional thickness of a fingernail (0.011 inches).
0.011 inches + 4x10^-3 inches = 0.015 inches
Therefore, a fingernail is about 0.015 inches thick.