A human hair has a diameter of about 4 x 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. (1 point)

Question

inches

Answer 1

To find the thickness of the fingernail, we need to add the thickness of the human hair to the additional thickness provided.

Given:

• Diameter of human hair = \( 4 \times 10^{-3} \) inches
• Additional thickness of the fingernail = \( 0.011 \) inches

First, convert the diameter of the human hair into decimal form:

• \( 4 \times 10^{-3} = 0.004 \) inches

Now, add the thickness of the hair to the thickness of the fingernail: \[ \text{Thickness of the fingernail} = 0.004 + 0.011 = 0.015 \text{ inches} \]

Thus, the thickness of the fingernail is \( \boxed{0.015} \) inches.