It's the square root of the square root of 81
[DOC] [TLE] Square Root of 81 [PAR] Square Root of 81: Here we answer what is the square root of 81, and ... find 
what its parts are called, and in addition to the terminology of 81 we also have 
a... [DOC] [TLE] Understanding square roots | Square roots | Exponents, radicals ... [PAR] Feb 20, 2011 - 1 minLearn how square root means what number multiplied by itself will result in the  given ... Let's ... [DOC] [TLE] What is the square root of 81?