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Yes, you can fill in a hole, you can not fill out a hole
I use one bag to 1 1/2 bags per hole and fill the rest of the way back with tamped topsoil... whatever came out of the hole.
2
Yes.
Six. That;s why they are called Sixths, not Eighths or anything else. oh and its one WHOLE not a hole :) sorry :P
(0.45/2)2 x pi x 2 = 1/3rd of a cubic meter
17.5 cubic feet or about 3/4 of 1 cubic yard.
about 432 cubic inches
NONE! The hole does have a volume of 3 x 2 x 2 = 12 cubic meters. 1 cubic meter is equal to 1,000,000 cubic centimeters. So you could FILL THE HOLE with 12,000,000 cubic centimeters of soil.
600mm into cubic meter
10 bags. Each 80 lb bag is 0.6 cubic feet, and your hole is 6 cubic feet.
1 "yard" of concrete is really 1 "cubic yard" = 27 cubic feet8 x 8 x 4 = 256 cubic feet = (256/27) = 9.48 cubic yards
A hole with two dimensions has no third dimension. → its volume is 6 ft × 10 in × 0 ft = 0 ft³ → You require NO concrete to fill a hole which is given as an area as it has NO volume.
2 inches = 1/6 foot27 cubic feet = 1 cubic yardVolume of the hole = (15' x 7' x 1/6-ft) = 17.5 cubic feet = 0.648 cubic yard (rounded)
25 feet is equal to 300 inches. The radius of a hole is half its diameter, which equals 4 inches. The volume of the cylinder is given by the formula v = [Pi]r2h, so the volume of your hole is 3.14 * 16 * 300 = 15080 cubic inches. There are 1728 cubic inches to the cubic foot, so you'll need about 8.75 cubic feet of concrete, which is about a third of a yard. (More exactly, that's a cubic yard, but concrete guys just say "yard.")
One cubic yard.
3 cubic feet of it.