The size of the penny is very important. The weight of it is 2.500 grams exactly. The diameter is 0.750 inches or 19.05 mm or 1.905 centimeters.
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The diameter of a US penny is 0.01905 metres
The approximate diameter of a circle whose circumference is 21cm is: 6.68cm
The approximate diameter of a circle with a circumference of 108 inches can be calculated using the formula: diameter = circumference / π. Therefore, the diameter would be approximately 34.37 inches.
A US copper penny is exactly 2 cm wide.
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