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## Is 4 a perfect square?

For instance, the product of a number 2 by itself is 4. In this case, 4 is termed as a perfect square. A square of a number is denoted as n × n. Example 1.

Integer | Perfect square |
---|---|

2 x 2 | 4 |

3 x 3 | 9 |

4 x 4 | 16 |

5 x 5 | 25 |

## What is the shortcut key for square root?

The Alt code for the symbol for the Square root is Alt +251 or 221A, then Alt+X. Follow these three simple steps to attach the symbol using the Alt code: – Position the pointer in the place where you want the square root symbol inserted. – Press and hold down the Alt key and type 251 from the numeric keypad.

## What is the root square of 10?

List of Perfect Squares

NUMBER | SQUARE | SQUARE ROOT |
---|---|---|

8 | 64 | 2.828 |

9 | 81 | 3.000 |

10 | 100 | 3.162 |

11 | 121 | 3.317 |

## How do you find a square root without a calculator?

Finding square roots of of numbers that aren’t perfect squares without a calculator

- Estimate – first, get as close as you can by finding two perfect square roots your number is between.
- Divide – divide your number by one of those square roots.
- Average – take the average of the result of step 2 and the root.