Contents

- 1 Is 89 a perfect square?
- 2 How do you calculate square root?
- 3 What is the square root of 1 to 100?
- 4 Why is 89 prime number?
- 5 What can equal 89?
- 6 Is 3 a square root?
- 7 IS 400 a perfect square?
- 8 Is 20 a perfect square?
- 9 What is the square of 1 to 20?
- 10 Is 1 a perfect square?
- 11 Is 27 a cube number?
- 12 Why is 11 not a prime number?
- 13 Is 69 a prime numbers?
- 14 Is 83 and 89 a prime number?

## Is 89 a perfect square?

Since 89 is not a perfect square, it is an irrational number.

## How do you calculate square root?

Example: Calculate the square root of 10 ( ) to 2 decimal places.

- Find the two perfect square numbers it lies between. Solution: 3
^{2}= 9 and 4^{2}= 16, so lies between 3 and 4. - Divide 10 by 3. 10/3 = 3.33 (you can round off your answer)
- Average 3.33 and 3. ( 3.33 + 3)/2 = 3.1667.

## What is the square root of 1 to 100?

List of Square Root from 1 to 100

Number (N) | Square (N^{2}) |
Square root (√N) |
---|---|---|

7 | 49 | 2.646 |

8 | 64 | 2.828 |

9 | 81 | 3.000 |

10 | 100 | 3.162 |

## Why is 89 prime number?

Yes, 89 is a prime number. The number 89 has only two factors. One is number 1 and the other is 89 itself. No other integer number divides 89 completely; hence 89 is a prime number.

## What can equal 89?

89 and Level 1

- 89 is a prime number.
- Prime factorization: 89 is prime.
- The exponent of prime number 89 is 1. Adding 1 to that exponent we get (1 + 1) = 2. Therefore 89 has exactly 2 factors.
- Factors of 89: 1, 89.
- Factor pairs: 89 = 1 x 89.
- 89 has no square factors that allow its square root to be simplified. √ 89 ≈ 9.43398.

## Is 3 a square root?

The process of multiplying a number times itself is called squaring. Numbers whose square roots are whole numbers, (or more accurately positive integers) are called perfect square numbers. List of Perfect Squares.

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

3 | 9 | 1.732 |

4 | 16 | 2.000 |

5 | 25 | 2.236 |

6 | 36 | 2.449 |

## IS 400 a perfect square?

400 is a perfect square. Because 20 * 20 = 400.

## Is 20 a perfect square?

A: No, the number 20 is not a perfect square.

## What is the square of 1 to 20?

Square, Cube, Square Root and Cubic Root for Numbers Ranging 0 – 100

Number x | Square x^{2} |
Square Root x ^{1} ^{/}^{2} |
---|---|---|

17 | 289 | 4.123 |

18 | 324 | 4.243 |

19 | 361 | 4.359 |

20 | 400 | 4.472 |

## Is 1 a perfect square?

Informally: When you multiply an integer (a “whole” number, positive, negative or zero) times itself, the resulting product is called a square number, or a perfect square or simply “a square.” So, 0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, and so on, are all square numbers.

## Is 27 a cube number?

A cube number is the answer when an integer is multiplied by itself, then multiplied by itself again. The first five cube numbers are: 1, 8, 27, 64 and 125.

## Why is 11 not a prime number?

Prime number is a positive natural number that has only two positive natural number divisors – one and the number itself. Prime numbers are subset of natural numbers. The number 1 is not a prime number by definition – it has only one divisor.

## Is 69 a prime numbers?

Since 69 has a factor 3 that is neither 1 nor itself, 69 is not a prime number.

## Is 83 and 89 a prime number?

87, the odd number following 85, is also not a prime number. It is divisible by 3. 89, the odd number following 87, is a prime number. 83 and 89 are six numbers apart; therefore, they are sexy primes.