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UK Circular Area Units Converter

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1 [cin] = 5.067074791 \times 10^{-4} [m^2]

In the imperial system there are so-called circular units that have been very rarely used, manly for wire sizes and then only as the ciruclar mil in the USA. The circular units represent the are of a disc of a diameter equal to the equivalent linear unit. A circular mil is the area of a disc one mil (0.001 [in]) in diameter, and hence equal to 7.85398163398 \times 10^{-7} [\mathrm{in}^2] or 5.067 \times 10^{-7} [\mathrm{m}^2]. It should be noted that the circular units should not be confused with circular measure, which referes to the expression of angle in radians.

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