The diameter of a penny is approximately 0.75 inches (19.05 millimeters). To convert this measurement to kilometers, we need to first convert inches to meters by multiplying by 0.0254 (since 1 inch is equal to 0.0254 meters). This gives us a diameter of approximately 0.0004826 meters. Finally, to convert meters to kilometers, we divide by 1000, resulting in a diameter of approximately 0.0000004826 kilometers.
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The diameter of a US penny is 0.01905 metres
A US copper penny is exactly 2 cm wide.
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 the sun is approximately 1.4 million kilometers. If we want to express a fraction of the sun's diameter, we would need to specify the numerator (the part we are interested in) and the denominator (the total diameter of the sun). For example, if we were interested in one-tenth of the sun's diameter, the fraction would be 1/10, which would equate to 140,000 kilometers.