sqrt(x) * sqrt(x) = x
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The formula is feet=square root of sq.feet
VRMS = 1/N times square root of [ sum(Vn2) ]
The usual rules for "order of operation" apply. Don't forget that the square root of a negative number is an imaginary number. As an example, the square root of -9 is 3i (that is, the square root of +9, times the "imaginary unit").
akash
The square root of 20 is an irrational number that can be expressed as 2 times square root of 5