1 yard of mulch at 12 inches deep would cover 25 sq. ft., so for 400 square feet you would need 16 yards. 12 inches is the depth you need to start with because the mulch will settle.
It depends on how thick you want to apply it.
About a 1,944 square foot area at 2" depth of mulch. Roughly equivalent to 12 parking spaces.
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.
proportional
Half a cubic foot.
Mulch is often sold by weight in bags, but a volume is assigned to the material in bags, too. We'll treat this as a volume problem as we have an area to cover (880 square feet), and a depth of coverage assigned (2 inches). We have to find the volume of that 880 square feet by 2 inch volume. First, we need to convert either the area in square feet to square inches, or the depth in inches to feet. The latter makes more sense (and it's easier), so let's do that.The 2 inches is 2/12ths of a foot, or 1/6th of a foot. We'll go with that. If we have 880 square feet by 1/6th of a foot in depth, we have 880 square feet times 1/6 feet, which is 146 2/3rds cubic feet of mulch, the required amount of mulch to cover the given area to the desired depth.
The area of a 5.9-foot square is: 34.81 square feet.
A square foot is a measure of area.
The square foot area of a 41-foot diameter circle is: 1,320 square feet.
The area of a square one foot on a side is 1 square foot
That's going to depend on how deep or shallow you spread it. If you spread it one foot deep, it covers an area of 2 square feet. If you spread it one inch deep, it covers an area of 24 square feet.
The area of a square with a 12-foot perimeter is: nine square feet.