None.
A square foot is a measure of area in 2-dimensional space while a cubic foot is a measure of volume in 3-dimensional space. The two measure different things and, according to basic principles of dimensional analysis, any attempt at conversion from one to the other is fundamentally flawed.
64 cubic feet
500 cubic feet
75 cubic feet
8*4*1.6 = 51.2 cubic feet
100*20*2 = 4000 cubic feet
500 cubic feet
64 cubic feet
just multiply, 494 sq ft
1375 cubic feet will create an object that is 11.2 ft. x 11.2 ft. x 11.2 ft.
12 ft * 72 ft * 12 ft = 10368 cubic feet.
75 cubic feet
That is 67,200 cubic ft.
That is 18 cubic ft.
100 cu ft × 2 = 200 cu ft.
8*4*1.6 = 51.2 cubic feet
100*20*2 = 4000 cubic feet
100 ft * 250 ft * 12 ft = 100*250*12 cubic ft = 300000 ft3