Square Root of 400
Square Root Calculator
What is the square root of 400?
Answer
√400 = 20
The square root of 400 is 20.
400 is a perfect square because 20 × 20 = 400.
Verification
√400 = 20
20 × 20 = 400
Found an error in the calculation or the information?
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See Also
- Factors of a Number - List all Factors and Factor Pairs of a Number
- Prime Number Checker - Find out whether a given number is Prime or not
- Prime Factorization - Prime Factorization Calculator
- Prime Numbers List - List of all Prime Numbers - how many Prime numbers are between
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Square Root Table
| Number | Square Root | Perfect Square |
|---|---|---|
| 192 | 13.8564064606 | No |
| 193 | 13.8924439894 | No |
| 194 | 13.9283882772 | No |
| 195 | 13.9642400438 | No |
| 196 | 14 | Yes |
| 197 | 14.0356688476 | No |
| 198 | 14.0712472795 | No |
| 199 | 14.1067359797 | No |
| 200 | 14.1421356237 | No |
| 225 | 15 | Yes |
| 256 | 16 | Yes |
| 289 | 17 | Yes |
| 300 | 17.3205080757 | No |
| 324 | 18 | Yes |
| 361 | 19 | Yes |
| 400 | 20 | Yes |
| 441 | 21 | Yes |
| 484 | 22 | Yes |
| 500 | 22.360679775 | No |
| 529 | 23 | Yes |
| 576 | 24 | Yes |
| 600 | 24.4948974278 | No |
| 625 | 25 | Yes |
| 676 | 26 | Yes |
| 700 | 26.4575131106 | No |
| 729 | 27 | Yes |
| 784 | 28 | Yes |
| 800 | 28.2842712475 | No |
| 841 | 29 | Yes |
| 900 | 30 | Yes |
Square Root Calculator
This calculator will help you find the square root of any number. For example, it can help you find out what is the square root of 400? (The answer is: 20). Enter a number (e.g. '400') and hit the 'Calculate' button.
Square Root Calculator