Thread: Does a tyre change its CIRCUMFERENCE when underinflated?
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Robin Robin is offline
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Default Does a tyre change its CIRCUMFERENCE when underinflated?
On 26/06/2018 09:06, The Natural Philosopher wrote:
On 26/06/18 06:31, Richard wrote:

20P and 50P coins have a constant diameter despite not being circular.

No, they do not.


They do for the normal meaning of "diameter" (which is not confined
circles, spheres or other n-spheres)


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Robin
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