(adsbygoogle = window.adsbygoogle || []).push({}); I measured the diameter of a wire and got 0.30. This is in millimeters right?

How would you calculate the cross sectional area? Is it just Πr²?

so Π x (0.15x10⁻³ x 0.15x10⁻³)

= 7.0 x 10⁻⁸m²

Is this right?

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# Homework Help: Micrometer reading/area of wire calculation

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