How many inches is equivalent to 1 circular mil?

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A circular mil is a unit of area used primarily in the electrical industry to represent the cross-sectional area of a wire. One circular mil is defined as the area of a circle with a diameter of one mil (one-thousandth of an inch).

To convert this, we can apply the formula for the area of a circle. The area (A) is given by (A = \pi r^2), where (r) is the radius. Since the diameter of a circular mil is 1 mil, the radius is 0.5 mils. Converting the radius to inches, we have:

  • Radius in inches: 0.5 mils = 0.5 × (1/1000) inches = 0.0005 inches

Now calculating the area:

  1. Convert the radius to inches.

  2. Calculate the area using the formula:

(A = \pi (0.0005)^2 = \pi (0.00000025))

Since we are interested in the units of area, we find it equivalent to:

  • 1 circular mil = 0.00000025 square inches.

This can also be expressed as ((\frac{

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