Chemistry question?

Question

The average diameter of one strand of adult human hair is 80.0 microns. By contrast, babies tend to have much finer hair, with an average diameter of 50.0 microns. (A micron is a micrometer = μm)

What is the difference in area of of an adult strand vs. a baby strand in cm2. (Area of a circle = π r 2).

Yuri · Answer

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Anonymous · Answer

They are asking you to figure it out.  Not me.

Chosey · Answer

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Gonzo · Answer

I thought Canadians were smarter than Americans

Roger the Mole · Answer

Supposing cross sectional area is meant:
pi x ((80.0 μm/ 2)^2 - (50.0 μm/ 2)^2) = 3063 μm^2 = 3.06 × 10^-9 m^2 difference

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Anonymous · Answer

Plug and chug, what's so hard about it?

? · Answer

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Anonymous · Answer

Good        question!

Chemistry question?

8 Answers