13 x 8.25 = 107.25 square feet
There are: 60/12*32/12 = 13 and 1/3 square feet
The result is 15 (14.9767) square meters.
Convert your dimensions to feet first then multiply to get your answer in square feet. 24 inches is 2 feet and 80 inches is 6 2/3 feet. 2 feet * 6 2/3 feet = 12 4/3square feet = 13 1/3 square feet. A word of warning - be careful when converting between different units of area: 1 ft * 1 ft = 12 inches * 12 inches = 1 square foot = 144 square inches. So our conversion factor for square inches to square feet is NOT 1/12 as it is for units of length, but 1/144.
1 square foot = (12 x 12) = 144 square inches 3 square feet = 432 square inches
12 inches is 1 foot: so 3 feet times 1 foot is 3 feet.
One feet is equal to 12 inches. Hence 6 feet by 3 feet is 216 square inches.
48 inches is 4 feet. 36 inches is 3 feet. So it is 12 square feet.
3 x 30 = 90 square feet. 1 square foot = 144 square inches (12 x 12) So 90 square feet = 12,960 square inches
20.7 square feet.
432 square inches
72 inches by 36 inches is the same is 6 feet by 3 feet which is 18 square feet.
There are 144 sq inches in a square foot. Doing the math gives an answer of 1,296 square inches.