www.reference.com/article/square-root-900-693b7ea31c4a95e4

The positive square root of 900 is 30. Similarly, the negative square root of 900 is -30. The positive square root, 30, is also known as the principal square root of 900.

www.reference.com/article/square-root-one-e52880f4e984c31

The square root of 1 is 1, just as the square of 1 is 1. The square root of a number finds a result that, when multiplied by itself, equals the original number.

www.reference.com/article/square-root-12-700226e8927c6146

The square root of 12 is 3.46, rounded to two decimal places. The square root is written as 2 times the square root of 3, in its simplest form. The function may be performed on most calculators by hitting the square root button followed by 12.

www.reference.com/article/square-root-5-b732a0fa6bfa5228

The square root of five is 2.236. The square root of a number is any number that, when multiplied by itself, has a product equal to the first number. Thus, 2.236 x 2.236 = 5.

www.reference.com/article/square-root-11-6afae80fe95c19cc

The numerical value of the square root of 11 is approximately 3.317, although the exact number has many more decimal places. Because 11 is a prime number, the square root of 11 cannot be written in a simplified form by factoring out other squared numbers.

www.reference.com/article/square-root-40-736f52813648eeec

The square root of 40 is 6.3245553. The square root of 40 is also written as 2√10. Numbers that are perfect squares have a whole number as their square roots.

www.reference.com/article/square-root-28-ac1a4e3e6cf0d384

The square root of 28 is 5.29, rounded to two decimal places, as 28 is not a perfect square. The square root of a perfect square is a whole number and not a decimal or fraction. The square root of 25 is 5, as 25 is a perfect square.