Template:Potd/2012-03-14 (en)

Animation of the act of unrolling a circle's circumference, illustrating the ratio π.

 Template:Potd/2012-03-14

This is the English translation of the Picture of the day description page from 14 March 2012.

Animation of the act of unrolling a circle's circumference, illustrating the ratio π.

Descriptions in other languages:

• Potd/2012-03-14 (cs)
• Potd/2012-03-14 (da)
• Potd/2012-03-14 (de)
• Potd/2012-03-14 (en)
• Potd/2012-03-14 (es)
• Potd/2012-03-14 (fr)
• Potd/2012-03-14 (hsb)
• Potd/2012-03-14 (hu)
• Potd/2012-03-14 (it)
• Potd/2012-03-14 (ja)
• Potd/2012-03-14 (ka)
• Potd/2012-03-14 (ko)
• Potd/2012-03-14 (mk)
• Potd/2012-03-14 (nl)
• Potd/2012-03-14 (ru)
• Potd/2012-03-14 (uk)
• Potd/2012-03-14 (zh-hans)