Assuming that the 4x8x16 means 4 yd x 8 yd x 16 yd the answer is: 4x8x16 = 512 cubic yards
4 feet x 8 feet =32 feet x 1.4 feet(16 inches)=44.8 square feet.
There is 27 square feet in one yard so you will need 1.66 yards.
Just buy 2 yards and your all set.
2.37 cubic yards.
.21 yards of sand will fill an area 115 inches by 67 inches to a depth of 2.5 inches.
259.2593 sq. yards.
2.37 cubic yard
None because it's a hole but 6 cubic yards of dirt will fill it up.
10-1/2 cubic yards
2.37 cubic yards of dirt is needed to fill an 8'X4' that is 24" deep garden box. If the box is filled 12 inches, the amount of soil needed is 1.19 cubic yards and that should be deep enough for most vegetables.
2.37 cubic yards.
.21 yards of sand will fill an area 115 inches by 67 inches to a depth of 2.5 inches.
259.2593 sq. yards.
2.37 cubic yard
None because it's a hole but 6 cubic yards of dirt will fill it up.
You are mixing volume (square yard) and area (length x width). How deep do you want the dirt? One foot deep you need about 80 square yards of dirt.
6,400 ft3
nah
A little less than 3" deep. A cubic yard is 3ftx3ftx3ft or 27ft3. You have 9 cubic yards or 9*27ft3 = 243ft3. If you divide 243 ft3 by 1000ft2 you get 0.243 ft. Multiply by 12 to covert to inches and your answer is 2.9" deep.
About 3 yards with a little left over. 2.78 yards.