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Q: Why isn't the number 15 a square number?

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The square root of 15 is not a whole number.

The square root of 15 is an irrational number

15 is the square root of 225 (15 x 15 = 225).

15, -15

Yes. Any number that is the result of a whole number multiplied by itself is a square number. Since 15 squared (152) = 225, the square root of 225 is 15.

The square number is 225 because 15*15 = 225

a square has a perimeter but a square isnt a perimeter. so no a square isnt a perimeter

No, but 16 is.

The square root of 15 being 3.87 the closest whole number would be 4

No, it is not.

Out of these numbers, 225 is a square number since the square root of 225 is 15.

225 15 x 15 = 225

15*2940 = 44100 and the square root of this is 210

15*15=225

Composite

15. 15x15=225

Yes

The square root of 225 is 15, which is a rational number.

There isnt

225 is a square number because 15 times 15 = 225

15 is one possible answer.

Composite

The square root of a negative number cannot be determined. It must be positive.

225 square feet. This is an easy calculation - just multiply the length by the width. The answer is the number of square feet.

6, 12, 15 and lots more.