2.54 grams/cubic inch
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1 cubic inch of water weighs 16.4 (16.3961) grams.
The density is 128 and an eighth grams per cubic inch.
13.6 grams/ccSame as the density of 1 cc, 72 pounds, 5 gallons, or a school-bus full of mercury.
The density of lead is 11.34g per cubic centimetre. As there are 16.387 cubic centimetres in one cubic inch, one cubic inch of lead weighs 11.34 X 16.387 or 185.83grams. In ounces this is 6.55 (or just over 6 and a half) ounces.
The density of steel varies, but if we assume it's 7.9 grams per cubic centimeter, then the weight of a 12" x 12" x 1/4" chunk can be calculated. There are 36 cubic inches in the chunk of steel (multiply the dimensions together), and there are about 16.387064 cubic centimeters in a cubic inch. That means there are about 573.54724 cubic centimeters in 36 cubic inches. At 7.9 grams per cubic centimeter, there are about 4531.023 grams of steel in 36 cubic inches of this alloy of iron. There are about 4531.023 grams or 4.53 kilograms, or about 9.989 (almost 10) pounds of steel in your twelve by twelve by one quarter piece. The answer in English units is 1 square foot of 1 inch steel weighs 40.8 pounds. take length times width in feet times the thickness in inches times 40.8 to find the weight. In answer to your question the weight would be 10.2 lbs. 1' * 1' *.250*40.8