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Square root of a rational number may either be rational or irrational. For example 1/4 is a rational number whose square root is 1/2. Similarly, 4 is 4/1 which is rational and the square root is 2 which of course is also rational.

However, 1/2 and 2 are rational, but their square roots are irrational.

We can say the square root of a rational number is always a real number.

We can also say the rational numbers whose square roots are also rational are perfect squares or fractions involving perfect squares.

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โˆ™ 2010-06-21 15:10:51
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Q: A short note on square root of rational number?
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What is an integer that is a rational number?

Every integer (note spelling) is a rational number.


Why is a whole number rational?

Yes, all whole numbers (integers) are rational. Please note though that not all rational numbers are integers.


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No, in fact unless an integer has an integral square root, the square root is always irrational. Note that some rational fractions can have rational square roots, though. Example: sqrt(4/9) = sqrt(4)/sqrt(9) = 2/3, which is rational. Or sqrt(9/16) = 3/4


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Yes, just look at decimals. Note: integers are a subset of rational numbers.


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Why do the 0.333 is a rational number?

0.333. is a rational number for it may be found as the ratio of two numbers. In this case, 1/3. (note the superscript . indicating a repeating decimal. )


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How do you find how to square a number to find an area?

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3.1415 is rational (as are all other terminating decimals). Note that these are some of the first few digits of pi (3.14159…, which really should be rounded to 3.1416 not 5); pi is an irrational number. Approximations of pi are generally rational numbers.


What numbers are rational numbers?

A rational number is any number that can be made by dividing one integer by another.0.5 is a rational number as it can be made by dividing the number 1 by the number 22 is a rational number because it can be made by dividing 2 by 1-6.6 is a rational number because it can be made by dividing -66 by 10---------------------------------------------------------Note there are number that are called irrational numbers. Irrational numbers are all "real" numbers (numbers with a decimal point) that cannot be written as a simple fraction - the decimal goes on forever without repeating.For instance the number Pi is an irrational number.A rational number is a real number that can be expressed as a ratio of two integers. Another way to think about it is this: if you can write a number as a fraction then it's a rational number.


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What is the primary purpose of Layer 4 port assignment?

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