Q:
# What Is the Square Root of 189?

**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 broken down into its factors, looking especially for perfect squares.

In this case, 189 is equal to 9 — a perfect square — times 21. The square root of each factor is then taken separately. The square root of 9 is 3, and the square root of 21 cannot be simplified further and is commonly left under the radical, which is another term used to refer to the square root sign.

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## What Is the Square Root of 324?

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## What Is the Square Root of 3,600?

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## What Is the Square Root of 39?

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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: