Question

What is the smallest number that must be added to 4515600 to get a perfect square?

Answer 1

We have,

$4515600$

$\Rightarrow 2124<\sqrt{4515600}$

$\Rightarrow 2125>\sqrt{4515600}$

$\Rightarrow 4515625>4515600$

$4515625$ is the perfect square nearest to $4515600$

Then,

$4515625-4515600=25$

It is the number be added to $4515600$.

Hence, $25$ is the answer.