Concept explainers
To calculate: To find the area of cross section of hair and write the answer in scientific notation.
Answer to Problem 9.7MPS
The area of cross section of hair is
Explanation of Solution
Given: The average width of human hair is
Formula Used:
Area of
Where,
Calculation:
Given average width of human hair is
Also, the cross section of the average hair is round
Thus, radius of circle is
Area of cross section of hair is calculated as
Conclusion:
Hence, the area of cross section of hair is
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