Cement, or Portland cement, is a dry powder made. from limestone and other materials. It is burned in a. kiln and then finely ground. Cement reacts chemically. with water to cause concrete to harden.
There are 43,560 square feet in a acre; this is 4,840 square yards. You can find a conversion calculator at http://www.unitconversion.org/area/acres-to-square-foots-conversion.html Originally, the size of an acre was approximately the amount of land an ox could plow in a day.here are 43,560 square feet in a acre; this is 4,840 square yards. You can find a conversion calculator at http://www.unitconversion.org/area/acres-to-square-foots-conversion.html Originally, the size of an acre was approximately the amount of land an ox could plow in a day.
How many acres per sq acre? There is no such thing as a square acre because an acre already is a square unit that is rectangular. So it's a bit of a paradox to try to square one when the dimensions arâ¦e already 66x660 feet (43,560 ft.) Scrooge McDuck once claimed to have three CUBIC acres of space in his money bin.