12 in = 1 ft
→ 6 in x 12 ft = (6 ÷ 12) ft x 12 ft
= 6 sq ft
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120 inches is a linear measurement, so there are zero square feet in 120 inches. For 120 inches2, however, as there are 144 square inches in one square foot (12 inches by 12 inches), there are 120/144 square feet in 120 square inches, or .833 ft2.
435 square feet = 435*12*12 SQUARE inches = 62640 sq inches.
To convert square feet to square inches, multiply by 144, which is 12 x 12.
To convert feet to inches, you multiply by 12 since there are 12 inches in a foot. Therefore, 3 feet x 4 feet = 12 square feet. To convert square feet to square inches, you square the conversion factor (12 inches) to get 144 square inches per square foot. So, 3 feet x 4 feet = 12 square feet x 144 square inches = 1,728 square inches.
12 feet 6 inches x 17 feet 9 inches = 221.875 square feet