Q:
# What is the square root of 324?

**The square root of 324 is 18.** The square root of a number can also be a negative number because the square of a negative number is always a positive number. The equation (-18) x (-18) = 324, therefore, the square root of 324 can also be (-18).

The square root of a number is determined by obtaining the factors of the number. The factors of 324 are 2 x 2 x 3 x 3 x 3 x 3; these factors can be simplified to show 2 x 3 x 3 squared, which is 18 x 18 = 324.

Similarly, the square root of 400 is either 20 or (-20). Numbers that are perfect squares have exact square roots. If a number is not a perfect square, its square root is a decimal fraction.

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

A: The square root of 81 is 9. However, if a student needs to solve the equation Â x2 = 81, then possible solutions can be either +9 or -9. Â ... Full Answer >Filed Under: -
Q:
## What is the square root of 9?

A: The square root of the number 9 is 3. That is worked out by deducing that 3 multiplied by 3, or 3 squared, is 9, so the square root is 3.... 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:
## What is the square root of 225?

A: The square root of 225 is 15. The square root of a number is the value that can be multiplied by itself to equal the original number. Fifteen multiplied by... Full Answer >Filed Under: