What is the square root of 81 64 July 8, 2019 16 32 64 128 What is the square root of 81 64 as a fraction What is the negative square root of 81 64 What is the square root of 64 over 81 Square root of 81/6400 Square root of 6 The square root of a number Square root of 15 Square root of 59 How to find the root of any number