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Q: What are square roots of the number 400?

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

20 and -20

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

square inches do not have square roots only number have square roots.

The two square roots of the number, '169', are +13 and -13 .

-15 15

They are -20 and +20.

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

400 is a significant number because it is a square number as 20*20 = 400

A number multiplied by itself is the square of that number. The reverse procedure is the square root. You can get help for square roots from you teacher, a tutor, a student who understands square roots, etc.

300

The two main roots in math are square roots and cubed roots. The square root is what number squared is your original number. For example the square root of 25 is 5 because 5 x 5 is 25. For cubed roots it is what numbered cubed is your original number.

It is a perfect square.

Yes, 202 = 400

20*20 = 400

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

A positive number has two square roots, its principal (positive) root and its negative root. This is because a negative number multiplied by a negative number equals a positive number. In this instance, the square roots of 256 are 16 and -16.

Every square number has a square root

There are none. Negative numbers don't have square roots. Well, they do, but they are known as imaginary numbers, and there is no way to determine them. A square root of a number is a number you can multiply by itself and get the original number. There is no number you can multiply by itself to get a negative number, but every positive number has two square roots of the same absolute value.

Yes, it is a perfect square.

The roots are 4 and 5. If you subtract the square number 16 (4X4) from the square number 25 (5X5), you would get 9.

a perfect square

Perfect Square

Such a number is called a "perfect square".

It is a perfect square.