Q:
# What is the square root of 81?

**The square root of 81 is 9. ** However, if a student needs to solve the equation Â x^{2} = 81, then possible solutions can be either +9 or -9.

Because 81 is a perfect square, it is easy to find its square root. However, finding the square root of a number that is not a perfect square is more difficult. For example, the square root of 72 is 6 x √2. To find this answer, factor 72 into 2 x 36, all placed under the √ symbol, then factor out again as 2 x 6 x 6 (still under the √ symbol). As 36 is a perfect square, the 6s can be moved outside the √, resulting in the answer of 6√2.

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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:
## How do you find the square root of 101?

A: To find the square root of 101, the square root of the number needs to be divided into several different numbers; three should be placed on top of the squa... Full Answer >Filed Under: -
Q:
## What is the square root of 12?

A: 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 functio... 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: