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Yes it can be converted into a rational number.

Let x = 2.19 bar

then, 10x = 21.9 bar (equation 1)

100x= 219.9 bar (equation 2)

(equation 2) - (equation 1)= 90x = 198

then x = 198/90 = 11/5

Thus 11/5 is the rational number form of 2.19 bar

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Yes.

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7y ago
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Q: Is 2.19 bar a rational number?
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