Deductive reasoning. You know that 10 x 10 is 100 and 20 x 20 is 400, so the square root of 225 is between 10 and 20. Only numbers that end in a five will create a square that ends in a five. 15 x 15 = 225
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The square root of 225 is 15.
Yes; the square root of 225 is both a positive and a negative 15. Therefore, the square root of 225 is an integer.
The square root of 225 is 15, which is a rational number.
That would be 15, otherwise known as the "square root" of 225
15 is the square root of 225 (15 x 15 = 225).