Question

classify the following numbers as rational or irrational
$\sqrt{441}$
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Answer 1

A rational number is part of a whole expressed as a fraction, decimal ,percentage. It is a number that cannot be written as a ratio of two integers (or cannot be expressed as a fraction). For example, the square root of 2 is an irrational number because it cannot be written as a ratio of two integers.

Given number

$441 \\ </p><p> </p><p> </p><p>Then \\ </p><p>441</p><p> </p><p> = </p><p>2×2×7×7</p><p>$

=21 is the perfect square

So √441 is the rational number .