How many square inches are there in 4 and a half square feet?

Answer 1

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).

========================================

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"

Answer 2

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

Answer 3

You need to say 'square inches', not just plain inches. There are 144 square inches in a square foot.

Answer 4

648 square inches in 4.5 square feet.