Answers

2016-06-21T20:52:25+08:00
Square root of 10 = 3.16227766
square root of  15 =3.87298335
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2016-06-21T21:14:39+08:00
What is the square root of 55? Which is not a perfect square. And how to estimate a non perfect square.

First step - Definition of square root

Second step - Find out if 55 is a non perfect square (result: non perfect square)
5²=25
6²=36
7²=49
55 is somewhere between 49 and 64= no whole number in between 7 and 8, that means 55 is not a perfect square.
8²=64

Third step - Estimate the square root of 55
So 55 is between 49 and 64, So let's pick a number between 7 and 8.
PICK 7.5

fourth step - check the answer
So square root 7.5 and then we get 56.25, which is close to 55

Final answer: So square root of 55 is ≈7.5

CREDITS: VN :)


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