The result of your conversion between barn and square millimicron appears here
To convert between Barn and Square Millimicron you have to do the following:
First divide 1E-28 / 1.0E-18 = 0.
Then multiply the amount of Barn you want to convert to Square Millimicron, use the chart below to guide you.
Symbol: b
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Symbol: mµ²
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