Well, a square foot isn't a number of inches long. It is a flat plane that is a foot
on each side. It is exactly 144 square inches large (1 ft.=12 inches, 12 inches
on each side means that the area is 12x12 sq. inches or 144 square inches).
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You can't tell the shape or dimensions from the area. There are an infinite
number of different shapes, and rectangles with different measurements,
that all have the same area.
-- If your square foot is a circle, then the diameter (distance across the circle) is 13.54 inches. (rounded)
-- If it's a square, then each side of the square is 12 inches long.
-- If it's a rectangle, then there are an infinite number of possibilities.
Here are a few. They all have one square foot inside:
1 inch x 144 inches
2" x 72"
3" x 48"
4" x 36"
6" x 24"
8" x 18"
9" x 16"
These are not the same thing, square inches is area, foot is length. Since there are 12 inches per foot, there are 12 x 12 or 144 square inches in one square foot.
21
You need to say 'square inches', not just plain inches. There are 144 square inches in a square foot.
648 square inches in 4.5 square feet.
4.375 square feet.
144,000 square inches.
45.833 square feet.
1 square feet.
66 inches is five feet but 5 and a half is 66.5
Half a SQUARE foot...
Approximately 215.63 square feet.
86.625 square feet.
215.3 square feet for this room.
17.25 * 12.01467 = 207.25 square feet.
0.006944... square feet.
736 square inches /144 = 5.111+ square feet, or 5 square feet 16 square inches
A square of 17.5 inches by 17.5 inches is 2.13 square feet.
1,008 square inches = 7 square feet.
106 square inches = ~0.74 square feet.
432 square inches = three square feet.
100 square inches = 0.69444 square feet