What is a linear inch for luggage?

Related questions

1. Do airlines measure carry on luggage?
2. How many suitcases are allowed on international flights?
3. Which is better abs or polypropylene luggage?
4. What is size of carry on luggage?
5. What size is a 62 inch suitcase?
6. Can I use a duffel bag as a suitcase?
7. What is the standard size of luggage?
8. What is considered oversized luggage?
9. What is a 15kg hold bag?
10. Do the wheels count when measuring luggage?

Tags

1. #total
2. #inches
3. #allowed
4. #simply
5. #airline
6. #height
7. #measures
8. #length
9. #carry
10. #width
11. #measurement
12. #allows
13. #measure
14. #linear
15. #would
16. #means