To solve this convert all measurement to a yard or square yard basis:
3 inches is 0.083333333333 yard
and 1500 square feet = 1500/9 = 166.6666666666667 square yards
Thus the amount of mulch you need is 166.6666666666667*0.083333333333= 13.88888888883333 cubic yards.
so you need to purchase 14 cubic yards of mulch for the job.
5inches
1 cubic yard will cover 15 square yards at 3 inches deep.
It depends on how thick the mulch is applied. For example, if applied at an average depth of two inches, the cubic yard of mulch will cover 162 square feet. If applied at an average depth of four inches, half that area or 81 square feet, etc.
Half a cubic foot.
226.875
One cubic yard will cover a 324 square-foot area with one inch of mulch. However your mulch should be 2 to 3 inches thick to maintain moisture and prevent weed growth. Be careful not to go to thick or you will cause mold to form in the mulch.
One cubic yard of mulch will cover approximately 160 square feet at 2" deep, so you would need approximately two cubic yards of mulch to cover 271 square feet at 2" deep.
33.33 cu yds
It depends on how deep you want your mulch to be. I usually shoot for 3 inches, in which case 1 cubic yard will cover 108 square feet (1 yard =27 cubic feet or 27 square feet to a depth of 1 foot. Divide 12 by your desired depth in inches and multiply by 27)
The 'square feet' of area that it covers is 1,620/(depth of the mulch, in inches)
if your talking about soil or mulch, then you are going to cover approximately 300 square feet.
One cubic yard of mulch will cover approximately 160 square feet at a depth of 2". This rule also applies to hardwood bark mulch, hardwood bark fines, and double and tripled shredded mulch varieties.