cylinder 18 feet diameter x 1.5 feet deep volume = 381 cubic feet
1 foot by 36 sq feet = 36 cubic feet of dirt is needed
Assuming 20 feet by 40 feet, 20x40x4 = 3200 cu ft = 3200/27 = 120 yards = 320,000 pounds
To fill a hole 2 feet long, 4 feet wide, and 6 feet deep would take 48 (2 x 4 x 6) cubic feet of dirt.
12 x 12 x 3 = 432 ft^3 = 144 yds^3
36 cubic feet of dirt=)
cylinder 18 feet diameter x 1.5 feet deep volume = 381 cubic feet
1 foot by 36 sq feet = 36 cubic feet of dirt is needed
8.333 cubic feet
39,600 cubic feet. 1,466 cubic yards or about 122 truckloads if it were non-compacted fill.
There is no dirt in a hole because a hole is defined by the absence of material, in this case dirt. If you were to fill the hole with dirt, it would require 24 cubic feet of dirt to completely fill it.
Assuming 20 feet by 40 feet, 20x40x4 = 3200 cu ft = 3200/27 = 120 yards = 320,000 pounds
To fill a hole 2 feet long, 4 feet wide, and 6 feet deep would take 48 (2 x 4 x 6) cubic feet of dirt.
12 x 12 x 3 = 432 ft^3 = 144 yds^3
if you mean a 30 foot diameter circle, then pi x 152 x 3 = 2119.5 cubic feet of dirt
This question is about a cubed area. First convert the inches to feet--18 inches is 1.5 feet. Then multiply all three numbers by each other. 15*12*1.5 is 270. You will need 270 cubed feet of dirt to fill the area.
Just multiply 1/2 foot x 12,000 square feet. The answer will be in cubic feet.