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FileFormat.info: Unicode Character 'Square Root' (U+221A) Unicode.org: Mathematical Operators; Decodeunicode.org: U +221 A Square Root; Unicode.org: Unicode Nearly Plain-Text Encoding of ...
To type the square root symbol using an Alt code: a. Make sure Num Lock is enabled on your numeric keypad. b. Press and hold the Alt key. c. Type 251 using the numeric keypad. d. Release the Alt key.
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