One liter is 61.02 cubic inches. Multiply liters by 61.02 to get cubic inches: 60 x 61.02 = about 3,661.2 cubic inches.
12 in = 1 ft → 40 in × 48 in × 60 in = (40 ÷ 12) ft × (48 × 12) ft × (60 × 12) ft = 10/3 ft × 4 ft × 5 ft = 200/3 cu ft = 66 2/3 cu ft ≈ 66.67 cu ft
1.8 cubic feet = about 3,110.4 cubic inches.
1 cubic ft = 1 ft * 1 ft * 1ft 1 cubic ft = 12 in * 12 in * 12 in 1 cubic ft = 1728 cubic inches
1 ft = 12 inches 1 cubic ft= 12x12x12 = 1728 cubic inches 4/5 cubic ft = 1728 x 4/5 = 1382.4 cubic inches.
6 inches = 1/2 foot.27 cubic feet = 1 cubic yard60-ft x 30-ft x 1/2 ft = 900 cubic feet = 331/3 cubic yards
1 cubic foot is 1,728 cubic inches. So, 2 cu ft = 2 x 1,728 = 3,456 cubic inches.
To calculate volume use this formula - length X width X depth. To go from inches to cubic yards use this formula - length in inches X width in inches X depth in inches = cubic inches. Then divide the cubic inches by 1728 to get cubic feet. Finally divide cubic feet by 27 to get cubic yards. Your Example - 108 inches X 60 inches X 6 inches = 38880 cubic inches 38880 cu in/1728 = 22.5 cubic feet 22.5 cu ft/27 = 0.834 cubic yards
3.69 cubic feet = 6,376.32 cubic inches.
69.5 cubic feet = 120,096 cubic inches
4 inches = 1/3 foot 1 cubic yard = 27 cubic feet (60-ft x 3-ft x 1/3-ft) / (3 feet per yard)3 = (2 and 2/9) cubic yards
797 cubic inches = 797/(12*12*12) cubic ft = 0.46123 cu ft (to 5 dp)