Q: How many square roots does the number 20 have?

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16 is an even number from 10 to 20, and its square roots are -4 and +4.

20

The two square roots of 400 are: 20 and -20.

20 and -20

20 is one of the two square roots of 400.

20. * * * * * Sort of. ± 20 are the square roots (not rout!) of 400.

They are -20 and +20.

-20 20

Prime numbers can't have whole number square roots, of course, but the largest prime number under 400 is 397.

No, a square root doesn't have to be a whole number. The square root of 2.25 is 1.5. It could be said that most square roots are not whole numbers. Take just the first few integers (counting numbers). Find the square roots of the numbers 1 through 10 and you'll find three of the numbers have whole number square roots (1, 4 and 9). The other seven don't. For the numbers 11 through 20, there is only 1 number with a whole number square root (16).

All of the integers between 20 and 30 are square roots.

There are (not counting 1) three square numbers between 1 and 20.

All whole numbers between 1 and 400 (=20 square).

20 is a not perfect square.

The square root of 20 is: ± 4.472136The square root of 20 is ± 4.472136 (to 7 sf).A square root of a number is the number that when multiplied by itself equals the given number.

20 is not the square of an integer, the square root of 20 is approximately equal to 4.472.

Well, a square number is the answer to a number multiplied by itself. So, what you'd have to do is multiply 20*20, and the answer is 400.

The square root of 20 is an irrational number

If you mean the square root is 20, the answer is 400. If you mean the square root of 20, the answer is about 4.47.

20 is a not perfect square.

Ten and negative ten.

The only square number of an integer between 20 and 30 is 25, which is equal to the square of Â±5.

20*20 = 400

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

It is: 4+16 = 20

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