Yes its the same just 2 different ways of saying it!
You get square units, if that's what you mean. The same applies to the area of any other figure.For instance, if the radius is in centimeters, the area will be expressed in square centimeters.
They mean the same thing. Square meters is the same as meters squared.
The terms 'squared feet', 'square feet' and 'feet squared' have the same essential meaning.
Since a squared plus b squared equals c squared, that is the same as c equals the square root of a squared plus b squared. This can be taken into squaring and square roots to infinity and still equal c, as long as there is the same number of squaring and square roots in the problem. Since this question asks for a and b squared three times, and also three square roots of a and b both, they equal c. Basically, they cancel each other out.
First keep in mind that 20 square kilometers is not the same as 20 kilometers squared. Conversion units will have to be squared as well. Second, remember that there are exactly 2.54 centimeters in an inch, or 30.48 cm/ft. Third, to convert from kilometers to centimeters, just multiply by a hundred thousand, or 105. Put it all together and you get 20 x (105 / 30.48)2 = 215,278,208.334... square feet (or about 7.722 square miles).
area
Yes
you cannot go from inches to centimeters squared. one inch = 2.54 cm you can go from inches squared to centimeters squared; in that case one inch square = (2.54 squared) cm = 6.45 cm squared
They are the same thing.
Nothing. Those are just two different ways of expressing the same thing.
10,000 square meters is equivalent to 10,000 square meters. No conversion is needed since they are the same unit of measurement.