This question cannot be answered sensibly. A square foot is a measure of area, with dimensions [L2]. An inch is a measure of distance, with dimensions [L]. Basic dimensional analysis teaches that you cannot convert between measures with different dimensions such as these without additional information.
9216 inches
1 square foot = 144 square inches8 x 144 = 1,152 square inches in 8 square feet
137.8 square feet.
Approximately 66.7 square feet.
78.3ft
14,976 square inches.
Divide 16 inches by 12 inches to convert to feet and multiply that exact answer times the 8 feet to get square footage: 10.66666 Square Feet
20.7 square feet.
A square foot measures 12 inches by 12 inches - which equals 144 square inches. That means that 1152 square inches = 1152/144 = 8 square feet.
Divide by 144 to make the conversion. This works out to be 8 square feet.
Zero - 7 feet 8 inches is a linear measurement (length of a line), while square meters are used to measure area (like, uh, squares). If you mean 7 square feet, 8 square inches, you can estimate this fairly easily - one meter is about 3.3 feet, so one square meter is about 3.3 * 3.3 = 10.89 square feet. So 7 square feet, 8 square inches (using a square inch = 1/144 of a square foot) would be 7 + 8/144 square feet, or 7.056 square feet. Divide this by 10.89 square feet per meter, and you get 7.056 / 10.89 = about 0.65 square meters. If you mean a square that's 7 feet 8 inches by 7 feet 8 inches, on the other hand, that's about 58.83 square feet, or about 5.4 square meters.
.333 square feet