4 cubic yards is 108 cubic feet.
If you were pouring a concrete sidewalk that was 6" thick and 4 ' wide.
it would be 54' long.
If you wanted to topdress a lawn with loam, guessing an average coverage of 4".
It will cover an area about about 16' x 20'
With an average coverage of 2" it will do an area roughly 32' x 32'.
19.38 cubic yards. Round up to at least 20 yards.
This is a volume calculation. I assume the dimension for the "6" is inches? If so, the volume= 20x20x0.5= 200 cubic ft.= 7.4 cubic yards
You need to know how much area you are covering and how thick you want the mulch to be. Roughly 3 inches thick is good enough. That is 3/12 = 0.25 feet thick Take area in square feet times thickness in feet, which gives a volume in cubic feet, then divide by 27 to covert to cubic yards For example, if you want to mulch an an area that is 75 feet long and 5 feet wide, the volume is 75 x 5 x .25 = 93.75 cu ft 93.75/27 = 3.5 yards (3 and 1/2 yards)
1 cubic yard = 27 cubic feet6 inches = 1/2 footVolume of the ditch = (12 x 78 x 1/2) = 468 cubic feet = 17 1/3 cubic yards
27 cubic feet = 1 cubic yard 16' x 16' x 6' = 1,536 cubic feet = 568/9 cubic yards
It will take 800 cubic yards 1/3 compaction.
1.7572 cubic yards
It would take 135 cubic feet = 5 cubic yards.
Assuming you pour to a thickness of 4", this area requires 4.75 cubic yards.
If it is 4 inches deep/thick, 2 cubic yards. If it is 6 inches deep/thick, 3 cubic yards.
Sorry the first answer was in square yds. Cubic yards would be 0.308639
8.25 cubic yards of concrete
An area 20ft x 34' is 680 square feet. 4 inches is 1/3 of a foot so cubic feet required is 680 x 1/3 = 226.7 cubic feet. There are 3x3x3 = 27 cubic ft in a cubic yard. Therefore cubic yards required = 226.7/27 = 8.4 cubic yards
None. "Cubic yard" is a unit of volume, or space. "Square yard" is a unit of area. They measure different things, with different physical dimensions, and they can't convert to each other. If volume and area could convert to each other, then you'd be able to figure out how many acres of gas you put in the car last week, and how many gallons of carpet it'll take to do the upstairs hallway.
about 17 yards of concrete (it's sold by the cubic yard)
19.38 cubic yards. Round up to at least 20 yards.
4800 x .33 / 27 = 58.66 yards