office, power(noun) (of a government or government official) holding an office means being in power. being in office already gives a candidate a great advantage; during his first year in office; during his first year in power; the power of the president. office, office staff(noun) professional or clerical workers in an office.
3cm or 1-1/4 thick granite weighs about 18+- pounds per square ft. 2cm or 3/4 thick granite weighs about 12+- pounds per square ft. example- If you have a granite top that is 3cm or 1-1/4 thick, 2ft X 10ft. that would be 20 square ft. 20 sq ft X 18 pounds per square ft. = 360 pounds.
The average weight of a sandstone boulder is approximately 150 pounds per cubic foot. Limestone boulders and granite boulders in most cases weigh more. They average about 175 pounds per cubic foot. To estimate the quantity, you need to convert the area into cubic feet by multiplying length x width x height.