You have three dimensions, so you are no longer measuring SQUARE feet but CUBIC feet. 10x10x12=1200 cubic feet.
744 Square Feet
To find the number of square feet covered by 373 cubic feet at a depth of 1 inch, you would first convert cubic feet to square feet. Since the depth is 1 inch, and there are 12 inches in a foot, 1 cubic foot would cover 12 square feet at a depth of 1 inch. Therefore, 373 cubic feet would cover 373 x 12 = 4476 square feet at a depth of 1 inch.
800 square feet x 1/12 x 3/4 = 50 cubic feet.
12 cubic meters = 423.78 cubic feet.
12 cubic feet
There are an infinite number of square feet in a cubic foot. This is because a square foot defines a 2D plane, and 2D objects have no depth. They are infinitely thin and therefore there would be an infinite number of square feet in a cubic foot. This is equal to asking how many 12 inch line segments are in a square foot, or to the next dimension, how many 12 inch line segments are in a cubic foot. Same answer, infinity.
192 cubic feet
This is not a valid conversion. Cubic units is a measure of volume while square units is a measure of area.
It is going to be cubic feet since you gave me three dimensions. (4.5 ft * 12) * (19 feet * 12) * 3 in = 36936 cubic inches = 3078 cubic feet
50 cubic feet = 50 * 12 * 12 * 12 cubic inches = 86400 cubic inches
1 cubic yard = 3*3*3 = 27 cubic feet 27 cubic feet spread to a thickness of 7/12 feet gives = 27/ (7/12) = 27*12/7 = 46.2857 sq feet (to 4 dp)