Q:
# What is the square root of 27?

**The square root of 27 is 5.19615242271.** The number 27 is not a perfect square, so it does not have an exact square root. Numbers such as 36, 49 and 121 are perfect squares and have exact square roots.

The square root of a number can be a positive number or a negative number. For instance, the square root of 25 is 5 or -5; this is because the square of a negative number is a positive number. The square of -5 is written as (-5) x (-5), and this gives 25. Similarly, the square of 5 is written as 5 x 5 and this also gives 25. Numbers that are not perfect squares such as 22, 30, 45 and 50 have their square roots as a decimal fraction.

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Q:
## What is the cube root of 81?

A: The cube root of 81 is 2.51. The cube root of the variable y is equal to the variable x such that when x is twice multiplied by itself the product is y, as... Full Answer >Filed Under: -
Q:
## What is the cube root of 250?

A: The cube root of 250 is 6.29. The cube root of a number, x, is equal to the number, y, such that y times y times y equals x. For the number 250, 6.29 times... Full Answer >Filed Under: -
Q:
## How do you find a number's square root?

A: Find the square root by finding the number that, when multiplied by itself, gives you the root number. For root numbers that are not perfect squares, there... Full Answer >Filed Under: -
Q:
## What is the square root of 189?

A: The square root of 189 is equal to 3 times the square root of 21, or approximately 13.75. To simplify the square root of a number, the number must first be... Full Answer >Filed Under: