Square feet measure area, you're looking for volume, which is cubic feet.
86 x 71 x 103 cubic inches. To get cubic feet divide by 1728 giving 363.96 cuft.
If you're wanting to know the surface area of a solid with those dimensions then it is
2 x ((86 x 71) + (86 x 103) + (71 x 103)) ie 44554 sqin or 309.4 sqft
Frst convert feet into inches . Next multiply. So 480 inches multiplyed by 72 inches equals 34,560 square inches
13.5 square feet.
17.11 square feet.
2 square feet.
675 square feet.
Frst convert feet into inches . Next multiply. So 480 inches multiplyed by 72 inches equals 34,560 square inches
5.55 square feet.
48 inches by 24 inches = 8 square feet.
51 inches wide x 30 inches long = 10.625 square feet.
A room 16 feet by 22 feet has an area of 352 square feet (16 x 22). If it is 8 feet 6 inches high, it has a volume of 2992 cubic feet (352 x 8.5).
2 square feet.
12.25 square feet.
5 square feet
13.5 square feet.
17.11 square feet.
Six square feet.
8.25 square feet.