16 x 2/3 = 10 2/3
you need 3,072 cubic feet of soil
To calculate the amount of soil needed, you multiply the area by the desired depth. In this case, you have 9300 square feet and want a depth of 12 inches. Convert the depth to feet (12 inches = 1 foot) and multiply: 9300 square feet x 1 foot = 9300 cubic feet of soil. So, you need 9300 cubic feet of soil to cover the area with a depth of 12 inches.
1 [cubic] yard = 27 cubic feet18 inches = 1.5 feetVolume of the garden = (8 x 12 x 1.5) = 144 cubic feet = (144/27) = (5 and 1/3) cubic yards
To cover that area to that depth - you would need just under 8 cubic yards of soil.
None but the cubic capacity of the hole is 16 cubic inches
8 inches = 2/3 foot27 cubic feet = 1 cubic yardVolume = 12 x 24 x 2/3 = 192 cubic feet = 71/9 cubic yards
8 inches = 2/3 ft 1 cubic yard = 27 cubic ft Volume = (32 x 2/3) cubic ft = 211/3 cubic ft = 0.79 cubic yard
First you need to understand that the "yard" of material is really a cubic yard (3 x 3 x 3) or 27 cubic feet. Each cubic foot is 12 inches by 12 inches by 12 inches. you begin by multiplying the 15 foot width by the 55 foot length. (15 x 55 = 825) If you assume that you have a 12 inch high fill then all you have to do is divide 825 by 1/4(3 inches) to get the number of cubic feet of top soil. divide again by 27 to get the number of cubic yards.
70 * 1.5 = 105ft^3 you need 105 cubic feet of soil. That is close to 4 cubic yards, so you'll need a dump truck to drop it off.
You will need 20,250 bags of soil.That's based on a typical bag of soil being 1 cubic foot. Going 6 inches deep. However this does not include soil compaction which is at least 25% depending on the density and moisture content in the bagged soil.Without Compaction factored in its just over 16,000 bags.About 600 cubic yardsAbout 40 Full Size Dump Truck Loads
You're already one step ahead, because you already know the area. If you know the area, just multiply by the depth to figure the volume. Trouble is, your units are inconsistent -- square feet and inches. One of 'em gotta go. Let's convert inches to feet: 2 inches = 2/12 feet = 1/6 feet. Now multiply 10,000 by 1/6 -- that's the same as dividing 10,000 by six -- and you get 1,667 cubic feet of soil. Soil is sold by the cubic yard, however, so divide by 27, because there are 27 cubic feet per cubic yard. That should give you 61.7 cubic yards. If a dump truck holds 12 cu. yd., you need five trucks. That's a lot of soil.
6 inches is 1/2 foot. 528 x 1/2 = 264 cubic feet. There are 27 cubic feet in 1 cubic yard. 264 ÷ 27 = 9.7777 repeated 9.78 cubic yards.