Historical clue formulations

• Factor in area calculation — 2017-02-05
• Area of a rectangle = length x ___ — 2016-02-29
• B, C or D, at a shoe store — 2011-10-06
• Height's companion — 2008-06-23
• One rectangle measure — 2006-05-23
• A, B, C, D or E — 2004-01-06
• Wiggle room, in a shoe — 2001-07-08
• D or EEE — 2000-01-20
• Furniture measurement — 1996-04-07