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Find the square root of 7921

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Find the square root of 7921

Posted by Vicky Bravo 6 years, 2 months ago

CBSE > Class 08 > Mathematics

3 answers

Yogita Ingle 6 years, 2 months ago

What's the bigger perfect square minor than 7921?
is 64.
The square root will start by a 8 (<mathjax>√64</mathjax>)

1) Subract 6400 from 7921 and you obtain 1521.

2)take 8 multiply it by 20 and add find the larger number

<mathjax>¯¯¯¯¯¯16n×n</mathjax> smaller or equal than 1521. <mathjax>169×9</mathjax> is exactly 9

3) so the solution is 89

4Thank You

Manju Kumari 6 years, 2 months ago

0Thank You

Vinod Kumar 6 years, 2 months ago

0Thank You

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CBSE > Class 08 > Mathematics