The height of each individual cracker in the vertical column is 1/8 inches.
The height of each individual cracker can be determined by dividing the volume of the column by 40 and the area of each cracker.
Area of each cracker = 2 x 1 1/2
= 2 x 3/2 = 3 inches
Height of each individual cracker = 15/40 x 3 = 1/8 inches
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