Volume = 120/12= 10 cubic feet for each 1 inch of depth= 2 bags for each 1 inch of depth.
(3 x 2 x depth of the hole in feet) cubic feet
110
The number of duffel bags that can fit in a 20-foot container depends on the size of the bags. A standard 20-foot shipping container has a volume of about 1,170 cubic feet. If we assume an average duffel bag is around 3 cubic feet, you could fit approximately 390 bags. However, this number can vary based on the actual dimensions and packing efficiency.
1 foot by 36 sq feet = 36 cubic feet of dirt is needed
40
You have a hole here that is 18.3 cubic yards, not .183. Unless your measurements are incorrect. If the measurements are correct, you will need about 800 bags of 80 lb quickrete. Not very efficient. Why not order ready-mix and save the labor of mixing and transporting to the hole. It will cost you around $2000 for the ready-mix. At $4 to $5 a bag it will cost you more for the quickrete. I really don't think your measurements are correct though: creating a slab 1.5 feet thick is unusual. Perhaps one of those dimensions should be inches (") not feet (').Find the correct number of cubic feet (if not 495 as shown here), and divide by 0.6 -- each 80 pound bag will provide about 6/10ths of a cubic foot of concrete.
ABOUT 43 bags. Dry sand weighs ABOUT 100 lbs per cubic foot- and you need 21.3 cubic feet.
Twenty-one .75 cubic foot bags equal 16 cubic feet.
Volume = 120/12= 10 cubic feet for each 1 inch of depth= 2 bags for each 1 inch of depth.
I have to guess at a lot, because you did not give enough information. Is this 11 feet x 11 feet x 1 foot? That is what I will assume. Sand has a density of about 2.7. So: 11 x 11 x 1 x 62.4 x 2.7 /50 = 407.7216 bags so about 408 bags
(3 x 2 x depth of the hole in feet) cubic feet
110
Depends on how thick the slab is, but 4" thick (.33 or 1/3 of a foot thick) would be typical. So multiply 10 x 10 = 100 square feet of area times .33(thickness in feet) equals 33 cubic feet. A 90 lb. bag contains about .66(two thirds) of a cubic foot of concrete, so you would need about 1 1/2 bags per cubic foot or 50 bags for 10'x10'x4"
It depends on how high you would like to fill it. You see, a liter is a 3-dimensional measure of volume (like a cubic foot is), and a square foot is a 2-dimensional measure of area. So, for example, to fill an area of 10,500 square feet to a height of 1 foot, you would need 297,326.889 liters.
The number of duffel bags that can fit in a 20-foot container depends on the size of the bags. A standard 20-foot shipping container has a volume of about 1,170 cubic feet. If we assume an average duffel bag is around 3 cubic feet, you could fit approximately 390 bags. However, this number can vary based on the actual dimensions and packing efficiency.
1 foot by 36 sq feet = 36 cubic feet of dirt is needed