Ordinarily, the square root of -70 does not exist since a positive number squared or a negative number squared results in a positive number.
If complex numbers are permitted, then the square root of -70 is i√70 ~= 8.367i where i is the imaginary square root of -1 such that i2 = -1.
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Rounded to two decimal places, the square root of 70 is equal to 8.37.
8.366600265
The square root of 70 can not be simplified, because the number 70 is not divisible by any perfect square (4, 9, 16, 25, 36, 49).
Rounded to two decimal places, the square root of 70 is equal to ±8.37. Therefore, the square root of 70 is between the numbers -9 or -8, or 8 and 9.
No, there aren't any square numbers between 70 and 80. From 70 to 80, no number has a perfect square root, so no square number exists between 70 to 80.