How many square inches in 100 sq. ft? ?

1 ft = 12 in

(1 ft)^2 = (12 in)^2

1 sq ft = 144 sq in

So, 100 sq ft = 14400 sq in

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One thing you should know is that English units of measure did not have a precise definition for hundreds of years. Scientists developed precision measuring equipment, but by then they were all using the metric system. The inch has been defined as 2.54 cm -- exactly. This is not an approximation, it is the exact definition of an inch which was meant to finally fix the dimensions of an inch. Knowing that, you can work up to converting all units. 1 foot = 12 inches = 30.48 cm (officially should be spelled centimetre world wide) 1 square foot = 30.48 cm, squared = 929.030 4 cm^2 (square centimetres) 1,000 square feet = 929 030.4 cm^2 [in science you group digits in groups of 3 on both sides of the decimal point. You don't use commas (,) to show thousands because in some countries that's the decimal point instead. All countries, when doing science, show the number as 929 030.4 otherwise it would be 929.030,4 in some countries and 929,030.4 in others.] but do a conversion, divide cm^2 by (100 cm/m)^2, or 10,000 cm^2/m^2, to get 92.903 04 m^2 (square metres).

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RE:

How many square inches in 100 sq. ft? ?

Just as the title says. I'm building rabbit cages, and the flooring comes in 100 sq. ft. rolls (or so I think) I want to know how many sq. in. are in 100 sq. ft.

1 foot = 12 inches

1 square foot = 12 inches * 12 inches = 144 square inches

100 square feet = 100 square feet * 144 square inches = 14400 square inches