The square root of 144 is 12 which is a rational number
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A perfect square root is where the square root of a number equals another whole number. For example, the square root of 144 is 12. 12 is a whole number thus 144 is a perfect square root.
12
The answer is 12, since 12 times 12 equals 144- that is, 12 squared is 144. The square root of a number is that number which when squared gives the given number. Unless the number is a square, its square root will be a decimal approximation.
12 (122 = 144, the closest square root)
Squaring a number is the inverse of square rooting. The square root of 144 is 12, so 12 squared is 144.