3 is the square root of 9
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3 is the square root of 9. 9 is a square number. 9 is the square root of 81. 81 is a square number.
No. The square of 9 is 9*9 = 81 so the square root (not route!?!) of 81 is 9. The square root of 18 is 4.24 (to 2 dp).
The principal square root of 9, the positive integer which is the square root of the number, is 3.
The square root of 81 is 9. The square roots of 81 are 9 and -9.
The square root of 1/9 is 1/3 because the square root of 1 is 1 and the square root of 9 is 3.