The symbol (a superscript 2) is not available on general keyboards.
However, most text handling programs (Word etc) allow the input of the ascii code for special symbols of which the squared sign is one. These symbols should display in files using charsets ISO 8859-1 or UTF-8.
For Windows operating systems, ensure the number lock is on , hold down the Alt key and using the numeric keypad type in 0178. The symbol 2 will appear in your document at the cursor position. Alternatively, use the 'Insert' menu heading and find symbols. A table will then be displayed in which you will find the 2 symbol. Click on the box containing this figure and then click on the Insert button.
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Any number, A, raised to some power, x, can be written in the form, A^x in keyboard form.E.g. five squared would be written 5^2.
there is not one on there
Yes
Yes you can.
square meters or meters squared: m2