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Linear inches (or linear centimetres) is a term invented by the airline industry to measure baggage. The size of an item in linear inches is the sum of the length plus the width plus the height of the item. A 20-by-20-by-5-inch suitcase, a 1-by-11-by-4-inch painting and a 1-by-1-by-43-inch fishing rod are all the same size in terms of linear inches. Size restrictions are different for different classes of tickets and for different airlines, but the one constant is that airlines measure baggage in linear inches. So by the same yard stick you can measure the dimensions of the suitcase that matches 180 linear centimetres.

- from e-how.com

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12y ago

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