Tofauti kati ya marekesbisho "Mzingo (jiometria)"

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wikidata interwiki
d (wikidata interwiki)
 
*[http://www.mathopenref.com/circumference.html Circumference of a circle] With interactive applet and animation
 
 
[[fa:پیرامون یک خم بسته]]
 
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