Answers

2016-03-18T10:55:08+05:30
Step1- ignore last two digits i.e 25
step2- 1st two digits are 20 so square no less than 20 is16 square root of 4
step3- last two digits 25 square root is 5
       so the answer is 45.....
2 5 2
u r sure na
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That method .... is only for numbers whose roots are multiples of 5....that tooo below 100
  • Brainly User
2016-03-18T11:01:54+05:30
Very easy 
first find the square root of 1st 2 digits then find the square root of last 2 digits
i.e 20- square no less then 20 => 4
25- perfect square of 5
then the answer is 45

hope it helps


2 5 2