The answer to this question depends on the type of rock you wish to fill the hole with.
If you use a solid block of rock to fill the hole (unlikely unless you plan to carve it out of a piece of marble), then the cubic feet of rock required is simply 5 x 5 x 3 = 75 cubic feet.
If you plan to use other forms of rock such as rubble, or gravel or granular A, or screenings, you will need to contact your local quarry to determine how they measure this quantity. I suspect, you would still specify the cubic feet as 75 cubic feet and that is what they will deliver. Depending on form, each one will only weigh a different amount (due to the spaces between pieces of stone) but will fill the same volume.
I don't know if this is what you were asking but .
33.5 cubic feet.
The volume you are trying to fill is 120000 cubic feet(100 x 100 x 12)1 cubic foot = 6.22883288 Imperial gallonsSo your pond of 120000 cubic feet would take about 747456 gallons to fill.or1 cubic foot = 28.3168466 litresSo your pond of 120000 cubic feet would take about 3397920 litres to fill.
About 21 cubic feet
1 foot by 36 sq feet = 36 cubic feet of dirt is needed
24 cubic feet . . . (6'x6'x 0.67')
8*5*1/2 = 20 cubic feet.
If the raised garden has dimensions of 5 x 5 x 1 then it requires 25 cubic feet of dirt to fill it.
4 × 2 × 1 = 8 cubic feet (8ft3)
if you mean a 30 foot diameter circle, then pi x 152 x 3 = 2119.5 cubic feet of dirt
8 ft * 10 ft * 0.5 ft = 40 cubic feet
As you fill it, a square 12-ft x 12-ft pool takes 1,077.2 gallonsfor every 1 foot deep.To fill it to the 10-ft rim will take 10,772gallons.Note:If you want to watch the thrilling drama unfold on your water meter, the meteris probably marked in cubic feet. The pool takes 144 cubic feet of water for eachfoot deep, and 1,440 cubic feet to fill it to 10-ft deep.
43,500 X 4 = 174,000 cubic feet and a there are 7.48 gallons in cubic foot, so 174,000 x 7.47 = 1,301,520 gallons ( over a million gallons).