That is called a perfect square. The first 10 are 1, 4, 9, 16, 25, 36, 49, 64, 81 and 100.
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It is an integer value in some measurement units.
The square root of any integer (except for a perfect square) is an irrational number. Other well-known irrational numbers are pi = 3.14159265... and e = 2.71828...
That term is not commonly used. A perfect square is simply the square of an integer. For example, 25 is the square of 5. Any positive number is the square of some number, but that number is usually irrational. For example, 2 is the square of the square root of 2 - approximately 1.4142136.That term is not commonly used. A perfect square is simply the square of an integer. For example, 25 is the square of 5. Any positive number is the square of some number, but that number is usually irrational. For example, 2 is the square of the square root of 2 - approximately 1.4142136.That term is not commonly used. A perfect square is simply the square of an integer. For example, 25 is the square of 5. Any positive number is the square of some number, but that number is usually irrational. For example, 2 is the square of the square root of 2 - approximately 1.4142136.That term is not commonly used. A perfect square is simply the square of an integer. For example, 25 is the square of 5. Any positive number is the square of some number, but that number is usually irrational. For example, 2 is the square of the square root of 2 - approximately 1.4142136.
A perfect square (commonly square number) is an integer that is the square of another integer. That is to say, a perfect square is the product of any whole number multiplied by itself.Commonly remembered perfect squares include, 1 (1x1), 4 (2x2), 9 (3x3), 16 (4x4) and 25 (5x5).
Every integer is a rational number, and some integers are perfect squares. These are the only rational numbers to have an integral square root.