alleryWhich unit best gives the thickness of a coin?
AThe kilometre
BThe millimetre
CThe decimetre
DThe metre
Answer & Solution
Correct answer: B. The millimetre
1. A coin is only a few millimetres thick.
2. Small thicknesses need small units.
3. A metre or kilometre is far too big.
_Source: Wikipedia, Millimetre (CC BY-SA 4.0, rev 1379027229), Millimetre_
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