User contributions for 2601:C:9900:B42:2833:74A1:5871:18B3
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7 February 2014
- 01:4101:41, 7 February 2014 diff hist −42 Annulus (mathematics) Deleted "( {{math|= circumference × width}}) " after the formula for area of an infinitesimal annulus. Formula is correct as is; deleted piece rendered as ({{{1}}})