Question

check 200 is perfect square​

Answer 1

It's square root is irrational number so 200 is not perfect square.

hope it helps you !!!

Answer 2

First, prime factorise 200 like the attached picture. Now check the prime numbers and see if you can make pairs out of them without a single number left out. In this case, we would get 2*2, 5*5 and a single 2 left out. Therefore, it is not a perfect square. The same method applies if you are trying to check if a number is a perfect cube, instead there you need to check if you can make groups of three without a number or two left out.