### Discussion :: Square Root and Cube Root - General Questions (Q.No.5)

Zee said: (Jun 12, 2011) | |

VERY SIMPLE R80+6R5=4R5+6R5=10R5=10*2.235=22.35 |

M.V.Krishna/Palvoncha said: (Sep 11, 2011) | |

Hello zee. You are right. But we know R5 value. For higher root values above explanation process is must. |

Sivajyothi said: (Apr 18, 2012) | |

I don't know how to find roots for long numbers like 34567 can you please tell me that. |

Nidhi Dahiya said: (Dec 15, 2014) | |

Please tell me what is the meaning of 3 root 5? Is it 125, means cube of 5. I am little confused. |

Poornamsh said: (Dec 18, 2014) | |

Make square of 3R5 square of 3 = 9 & square of R5 = R5*R5 = 5. This is the answer and meaning of 3R5. |

Manoj Kumar said: (Dec 25, 2014) | |

I am not understanding what you have solved explain it again briefly? |

Amit said: (Feb 20, 2015) | |

For better result you can consider it as follow: The square root of 81 = 9*9 = 9. So, the square root of 80 should be less then 9 lets guess it as 8.80. Same way the square root of 4 = 2*2. We can guest square root of 5 should be greater then 2 lets say it is 2.25. Now 8.80+6*2.25 = 8.80+13.50 = 22.30. Choose the nearest answer from our answer which is 22.35. So answer = 22.35. This is not accurate method this can be only use when you have very less time. |

Khushb said: (May 24, 2015) | |

How is 17.88 turn into 2.235 what 8 did here? |

Vikas said: (Jun 14, 2015) | |

Can anyone explain me the third step of explanation? |

Mozzima said: (Jul 6, 2015) | |

How you can eliminate 8 in 8r5? |

Nanalal said: (Oct 3, 2015) | |

Sir How to solve these questions? R5456*R2120/R460. |

Abhijit said: (Nov 20, 2015) | |

How to calculate value of R5 manually? |

Sukanto Karmakar said: (Dec 27, 2015) | |

I want to know how to calculate value of R5 manually? |

Taj said: (Feb 12, 2016) | |

How to calculates R5 in short cut method? |

Gargi Sarma said: (May 10, 2016) | |

I don't understand this sum clearly. Can anyone help me to understand this? |

Uma Mahesh said: (May 20, 2016) | |

Could you please explain this problem clearly? |

Mahi said: (Jul 8, 2016) | |

Anyone please explain R5. I was more confused in that. |

Divya said: (Oct 11, 2016) | |

We have to divide 17.88 by 8, so root 5 = 2.235. |

Viju said: (Dec 26, 2016) | |

Can you please explain in simple method Hw it come 2.235? |

Ashwini said: (Nov 11, 2017) | |

Here you divide 17.88 by 8 then why you multiplied 2.235 by 10? |

Sangay said: (Jul 23, 2018) | |

If 35 + 125 = 17.88, then what will be the value of 80 + 65? Please explain. |

Wrick said: (Nov 12, 2018) | |

Easiest way is; 8√5=1788/100. => (10/8)*8√5 = (1788/100) * (10/8) = 223.5/10 = 22.35. |

Honnu said: (Jun 6, 2019) | |

Please anyone explain, How to calculate √5 value? |

Vicky said: (Sep 2, 2020) | |

Easy way to find R5 value. 2 square is 4. 3 square is 9. So, find the number between 2 and 3.we choose 2 because 2 square is 4 less than 5. 5/2=2.5. Average between 2 and 2.5. 2 + 2.5/2 = 4.5/2 = 2.235. So, the R5 value is 2.235. |

Hussen Ahmed said: (Jul 22, 2021) | |

Sr 80 + 6 Sr 5. It means that Sr 16 * 5 + 6 Sr 5. => 4 Sr 5 + 6 Sr 5. Then simplify 10 Sr 5 = 10* sr 5. Sr 5 is = 2.235 * 2.235. 10 * 2.232 = 22.35. |

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