



 
Hi, Georgia, The volume of a "box" is the length, times the width, times the height if they are all in the same units. Your bed has a depth of 12 inches which is 1 foot so its volume is $6 \times 4 \times 1 = 24$ cubic feet. Each bag of soil is 2 cubic feet so you will need 12 bags. God luck with the garden,  


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