12 in = 1 ft Volume = 311 sq ft × 2 in = 311 sq ft × (2 ÷ 12) ft = 51 5/6 cu ft (≈ 51.8 cu ft) = 51 5/6 ÷ 0.8 cu ft/bag = 64 19/24 bags ≈ 64.8 bags → you need to buy 65 bags.
19681.81 sq ft
5220.5 sq ft
3 sq yards = 3*9 sq ft = 27 sq ft
288 sq ft
12 in = 1 ft Volume = 311 sq ft × 2 in = 311 sq ft × (2 ÷ 12) ft = 51 5/6 cu ft (≈ 51.8 cu ft) = 51 5/6 ÷ 0.8 cu ft/bag = 64 19/24 bags ≈ 64.8 bags → you need to buy 65 bags.
1076.391042 sq. ft.
19681.81 sq ft
5220.5 sq ft
32 sq. ft.
1 sq yd are in 9 sq ft
3 sq yards = 3*9 sq ft = 27 sq ft
288 sq ft
1120 sq ft
5468 sq ft
55,000 sq ft.
3100 of them.