None, since there can be no such conversion.
A pound is a measure of mass. A cubic foot is a measure of volume. The two measure different things and, according to basic principles of dimensional analysis, conversion from one to the other is not valid. If you are not convinced, consider a cubic foot of water. How many pounds? Next consider a cubic foot of lead. How many pounds?
50 L = 1,765 733 cubic foot 50 liters is 1.766 cubic feet
100 cubic feet = 2.83 cubic meters
The answer depends on the units used for 50*50. It should be obvious to anybody that the area of a 50 ft * 50 ft room will be quite different to that of a 50 hectometre * 50 hectometre room, for example.
5 feet by 10 feet is 50 square feet.
If the given dimensions are in feet then 40 feet times 50 feet = 2000 square feet
50 liters cubic space in square feet
Square feet is 2-dimensional while cubic feet is 3-dimensional, so they cannot convert.
800 square feet x 1/12 x 3/4 = 50 cubic feet.
50 cubic feet = 50 * 12 * 12 * 12 cubic inches = 86400 cubic inches
50 L = 1,765 733 cubic foot 50 liters is 1.766 cubic feet
6.684 cubic feet.
100 cubic feet = 2.83 cubic meters
Answer = 50 x 50 = 2500 sq feet
That question is impossible to answer because 50 inches by 51 feet is an area (2-dimensional), not a volume (3-dimensional). If you ask how many square feet are in it, that's legitimate. If you ask how many cubic feet in 50 inches x 51 feet x 1 foot, that's also legitimate. But not THIS question.
50 acres = 2,178,000 square feet.
50 square meters = ~538.2 (538.195521) square feet.
25 feet x 50 feet x 4 inches = 416.25 cubic feet