Well, gee, I think that would be 2 bags. But if you have found a bag that is 2 cubic yards, that is ONE HUGE BAG...Enough to fill the back of a pick-up truck. I think you better look into your phrasing, one cubic yard of mulch will cover 100 square feet, or an area that is 10' x 10'.
IMPROVED ANSWER: I think you mean that 1 bag of mulch will cover 2 cubic feet. That's the standard bag sold at Lowes & Home Depot. 1 cubic yard = 27 cubic feet (3'x3'x3'=27). Therefore 4 cubic yards is equal to 108 cubic feet. You would need 54 bags (108/2=54).
That's 13 cubic yards of mulch for every 2 inches deep.
One cubic yard is equivalent to 27 cubic feet. Since each bag of mulch covers 2 cubic feet, you would need 27 divided by 2, which equals 13.5 bags. Therefore, you would need 14 bags of 2 cu ft mulch to cover 1 cubic yard, rounding up to ensure complete coverage.
It depends how deep you want it.
The area covered by one cubic yard of Mulch is dependant on the depth that themulch is applied. At 3" it covers 108 ft2, at one inch it covers over 300 ft2.The 'square feet' of area that it covers is 324/(depth of the mulch, in inches)
1 cubic yard will cover ~90 sq feet
The 'square feet' of area that it covers is 1,620/(depth of the mulch, in inches)
To calculate the volume of mulch needed, first convert the dimensions into cubic feet. The area of the playground is 125 feet × 60 feet = 7,500 square feet. With a depth of 6 inches (0.5 feet), the volume is 7,500 square feet × 0.5 feet = 3,750 cubic feet. Since there are 27 cubic feet in a cubic yard, divide 3,750 by 27 to get approximately 138.89 cubic yards of mulch needed. Thus, you will need about 139 cubic yards of 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.
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.
1 cubic yard will cover 15 square yards at 3 inches deep.
It will cover about 8 sq.feet if you spread it one inch thick.
A ruler or tape measure is the best unit to make the measurement with. Once you finish the measurement, you'll probably want it expressed in terms of cubic feet, to take to the garden shop and buy the bags of mulch.