Question

What was defined as ‘three grains of barley, dry and round, placed end to end lengthwise’?
A) Centimetre B) Millimetre C) Inch

Answer 1

centimeter is your correct answer

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Answer 2

The answer is centimetre.

This is a description of the centimetre like the size of the dried and round barley grain.  

It is used by the International Bureau of weights and measures and it is used to measure  unit of length as part of the metric system.

It remains a practical unit of length for multiple measurements and it is used worldwide for several second moment of areas.