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Is 13 a perfect square? 13 is a perfect square if the square root of 13 equals a whole number. As we have calculated further down on this page, the square root of 13 is not a whole number. 13 is not a perfect square.Is 225 a perfect square?
The square root of 225 is expressed as √225 in the radical form and as (225) ½ or (225) 0.5 in the exponent form. The square root of 225 is 15. It is the positive solution of the equation x 2 = 225. The number 225 is a perfect square.