12 boxes, if you do not stack the boxes.
24
2 foot by 3 foot means its just two dimensions. because you said shelf i am a bit confused. when you say shelf i think of something coming off the ground having a third dimension. a 12 inch by 12 inch box means the volume of the box is 1 foot by 1 foot by 1 foot. your shelf is 2 foot wide and 3 feet high... how deep is it? telling the depth will let someone know how many rows they are allowed to put but if your shelf is two-dimensional... which doesnt sound correct... you can put 6 boxes in that shelf.
If there is a 6 foot shelf and the boxes are 3 inches long, the 6 multiplied 12 by equals 82 inches. 82 inches divided by 3 is 27.33 boxes. So with a 6 foot long shelf you can fit 27 3 inch boxes on it.
twelve
A shelf measuring 2 feet by 3 feet has a surface area of 6 square feet. Each of your boxes is 1 foot by 1 foot (12 inches x 12 inches). You can fit only 6 boxes onto your shelf in a single layer.
This question is incomplete.
The number of boxes that can fit in a 20-foot contain can vary a bit by the size of the boxes. Anywhere from 700 to 1000 boxes is average.
Storage conex boxes come standard in 20-foot, 40-foot and 45-foot sizes.
how do I treat deep cut under foot
About 1 foot 3 inches. ;-)
think how you got there
About a foot deep.