-- 1 square inch weighs nothing, since its volume is zero.
-- If the square inch is one end of a vertical column of water, then the column
weighs about [ 5pounds 31/3ounces ] for each 12-ft of its height.
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It would weigh about 14.3 pounds .
1 cubic inch of water weighs 16.4 (16.3961) grams.
One square inch is a square that is 1 inch wide and 1 inch tall.
1 inch is a measure of length. Kilogram is a measure of weight. An inch never can weigh something.
Gypsum or plaster board3 3/8 inch 1.56 pounds per square foot 1/2 inch 2.08 pounds per square foot 5/8 inch 2.60 pounds per square foot