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Old-style $1 coins (1978 and earlier) are 38.1 mm in diameter; while new (1979 and later) ones are 26.5 mm.

Multiply those diameters by pi (about 3.1416) to find the circumference.

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βˆ™ 14y ago
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Q: If you rolled a dollar coin on its edge how far would it go with each complete turn?
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