A human hair has a diameter of about 4×10−3 inches. A fingernail is about 0.011 inches thicker. How thick is a fingernail? Write your answer as a decimal to 3 places.

Answer 1

To find the thickness of a fingernail, we can subtract the diameter of a hair from the thickness of a fingernail.

Thickness of fingernail = Thickness of hair + 0.011 inches.

Since the diameter of a hair is about 4×10^(-3) inches, the thickness of a fingernail can be calculated as follows:

Thickness of fingernail = 4×10^(-3) + 0.011.

Adding both values:

Thickness of fingernail ≈ 0.015.

Therefore, the thickness of a fingernail is approximately 0.015 inches.