Which of these numbers is an irrational number?(1 point)%0D%0AResponses%0D%0A%0D%0A28−−√%0D%0A28%0D%0Asquare root of 28%0D%0A%0D%0A81−−√%0D%0A81%0D%0Asquare root of 81%0D%0A%0D%0A36−−√%0D%0A36%0D%0Asquare root of 36%0D%0A%0D%0A49−−√
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The square root of 28 is an irrational number.
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