In the US it is customary to say "square" before the unit when speaking of area. So one would say square feet, square meters, square inches, and so on.
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None! They both mean the same thing. For example, if your floor measures 3 meters long and 2 meters wide you would need 6 square meters of carpet. Alternatively you could say "My floor measures 6 meters squared." Five meters squared. This refers to a linear measure, five meters. It also tells what function to apply to the measure-- make a square with it. If I make a square with a five meter chain, I will end up with 25 square meters. Five square meters. This will be equivalent to five of the 25 squares that the above area contains. Quite different. If you have a floor measuring 3 meters by 2 meters and you ask the carpet guy for carpeting to cover 6 meters squared, you will get an unpleasant surprise.
id say 10.000
meters are a measure of lengthmeters squared are a measure of areaThey measure different things and cannot be directly converted.However, if you are given the lengths of, say, a rectangle, multiplying the two lengths (each measured in meters) together will find the area (measured in meters squared).
Surface area is the sum of the areas of all the surfaces of an object. When you add units, they stay the same. Since you are adding, let's say, meters squared and meters squared and meters squared, your unit is still meters squared. Volume is a measure of how much space is inside an object. To find volume, you must multiply length, width, and height. In our example, that would be meters x meters x meters. When you multiply units, they multiply to each other. So, we get meters cubed, or meters^3.
√182 is 18. Trouble is, that's not 18 squared. Try √3242 * * * * * Good try but not good enough! 18 squared is the squared root of 18 to the fourth power. That is to say, 324 is the square root of 104,976