1. Verify that your suitcase is a "box" with six flat surfaces that meet at right angles. When a suitcase has rounded corners, measure to where the corners would be if they
http://www.ehow.com/how_6003907_calculatelineari...

Add up the three dimensions of your box, suitcase, etc. Height plus width plus depth should total 40. Examples include: 15 inches wide, 15 inches deep, 10 inches high = 40 linear
http://wiki.answers.com/Q/How_do_you_calculate_40_...

Heres an example: a 70" x 90" quilt would have 320 linear inches of edge (70" +
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1. Linear feet is used to denote length. If you are determining linear feet from a plan, you will simply need to add the length of different pieces together. If you are taking measurements
http://www.wikihow.com/CalculateLinearFeet
