If it rained 1 inch thick water over 1 square mile, the volume of that water would be approximately 2,323,200 cubic feet. That is equal to 65,785,698.28 kilograms, or 145,030,199 pounds.
It would weigh about 14.3 pounds .
We don't know the floor-size of your classroom, so we can't calculate an answer.
It is not possible to answer the question sensibly. Square feet are a measure of area, whereas weight is a property associated with volume. 10 sq feet of oak would probably weigh less than a feather if it were 1 micron thick. On the other hand, it would weigh a lot if it were 2 foot thick.
The question cannot be answered. A square metre is a measure of area not of volume. A block of lead, with an area of 1 square metre could be a few atoms thick or several metres thick. Their weights will differ considerably.
Square inches of water is not measurable. The question must be in cubic inches of water in order to give a third dimension to the water. Width X length X depth = cubic size of water you wish to weigh.
3/8" OSB is approximately 1.2 lbs per square foot. A typical 4'x8' sheet, then, would weigh in at slightly under 38.5 lbs.
This largely depends on the material the carpet is made out of. Other factors that contribute to weight are how thick the carpet it is, and how dense the carpet fibers are.
It depends on the density of the material.
-- 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.
5280 ft x 5280 ft x 5280 ft x 62.4 lbs per square ft = 9,185,152,204,800 lbs
The question as posed is unanswerable. In order to compute the weight of an inch of water, one would have to know the volume, or area the one inch covers. (ie., a square foot of water one inch deep would weigh=X)
The answer depends on how long and thick the stick is.