A4 versus US Letter - Battle of the paper sizes A4 versus US Letter - Battle of the paper sizes begin-post-stats And Now You Know • 6K views end-post-stats begin-duration 4:16 end-duration Math topics: _Integers_##Integers##_1_(number)_##1 (number)##_16_(number)_##16 (number)##_9_(number)_##9 (number)##_70_(number)_##70 (number)##_11_(number)_##11 (number)##_Dimensionless_numbers_##Dimensionless numbers##_Square_root_of_2_##Square root of 2##_Aspect_ratio_##Aspect ratio##_Aspect_ratio_(image)_##Aspect ratio (image) Other topics: _Stationery_##Stationery##_ISO_216_##ISO 216##_Paper_##Paper##_Letter_(paper_size)_##Letter (paper size) video-id: bWMGfFHr1ww channel_And_Now_You_Know_ So What Learning Dimensionless numbers , Integers , Stationery Saturday, January 20, 2018 Share Share