You would need 1,260 cubic feet of mulch to cover an area of 28 x 45 feet. This is calculated by multiplying the length (28 ft) by the width (45 ft) to get the total square footage (1,260 sq ft) and then multiplying by the desired depth of mulch.
A bit more then 10.
Depends on the size of the bag. BUT, typical bags of mulch at places such as Home Depot weigh about 40 pounds and contain 2 cubic feet of mulch.
You need (182/3) divided by (cubic feet of mulch in each bag) bags.
Volume = 50-ft x 5-ft x 1/4-ft = 62.5 cubic feetYou'll need(62.5)/(cubic feet of mulch in each bag) bags.
On average, there are about 0.83 cubic yards of dirt in a ton, which is equivalent to roughly 22 cubic feet. This can vary depending on the density of the dirt and how tightly it is packed.
To convert cubic feet to cubic yards, divide by 27. If each bag is 2 cubic feet, then 1 cubic yard is equivalent to 13.5 bags of mulch (27 cubic feet ÷ 2 cubic feet per bag). Therefore, 6 cubic yards are equivalent to 81 bags of mulch (6 cubic yards * 13.5 bags per cubic yard).
(90-ft x 4-ft x 1/3-ft) = 120 cubic feet = 44/9 = 4.44 cubic yards (rounded)
At an average of about 30 lbs per cubic foot, that is about 20/30 = 2/3 cubic feet. A little less if wet, about 1 cu ft if really dry
1.85 cubic yards...probably 25 bags or so
4310 sq ft X 10/12 ft = 3592 cubic ft
25 cubic feet or about 1 cubic yard.