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The square root of 81 is 9 which is a rational number
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∙ 6y ago
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Is the square of 2 rational number?
Yes, the square of any rational number is also a rational number.The square root of 2 is not a rational number.
Is every rational number a perfect square?
No. Though every perfect square is a rational number, not every rational number is a perfect square. Example: 2 is a rational number but sqrt(2) is not rational, so 2 is not a perfect square.
Is negative 81 a rational number?
Yes, it is.
Does there exist an irrational number such that its square root is rational?
No, and I can prove it: -- The product of two rational numbers is always a rational number. -- If the two numbers happen to be the same number, then it's the square root of their product. -- Remember ... the product of two rational numbers is always a rational number. -- So the square of a rational number is always a rational number. -- So the square root of an irrational number can't be a rational number (because its square would be rational etc.).
What is the product of a rational number multiplied by itself?
It is the square of the rational number.
What is the value of n for which square root of n be a rational number?
n is a square of a rational number. For example, 4 or 81, or 2.25 or 36/25.n is a square of a rational number. For example, 4 or 81, or 2.25 or 36/25.n is a square of a rational number. For example, 4 or 81, or 2.25 or 36/25.n is a square of a rational number. For example, 4 or 81, or 2.25 or 36/25.
Is the square root of 81a rational number?
Yes. The square root of 81 is 9, which is a rational number.
Is the root of 81 an irrational number?
No. The square root of 81 is 9, which is a rational number.
Is the square root of 81 rational?
Yes. The square root of 81 is 9 - a natural number and all natural numbers are rational numbers.
Is the number 81 rational?
Yes and it is also a square number because 9*9 = 81
Is sqrt 81 a irrational number?
No because the square root of 81 is 9 which is a rational number
Is 81 a rational number?
Yes. 81 is a:- Real number - Rational number - Integer - Natural number - Counting number - Square number - Odd number
Which type of number is square root of 81?
Integer, rational, and real.
Is the square root of 81 a rational number?
Yes. It's +9 and -9. They're both rational.
Is the square root of of 81 over negative three irrational?
No. The square root of 81/(-3) is rational. The square root of [81/(-3)] is imaginary (a kind of complex number).
Is 81 rational or inrational?
81 is a rational number
Is 81 a irrational number?
No. 81 is a rational number. An irrational number is a number with an endless amount of digits like pi or the square root of 2.
