The squares of 25, 26, -25 and -26 are in that range.
Take the square root of 600, and the square root of 700, on a calculator. Any number between those two (or the negative thereof), if squared, will give you an answer between 600 and 700.
what is a number you can square that is bigger than 700 but smaller than 800?
You can square any number.
No, not always since: if a number is more than 1, then its square root is smaller than the number. if a number is less than 1, then its square root is bigger than the number.
24
29
They are 324 and 361 which are both square numbers
Square numbers that are bigger than 600 and smaller than 800 include 625, 676, 729 and 784
21 and 22
841 is a perfect square in the range.
27
18 and 19
There are an infinite number of them. One of them is[ the square root of(0.0000000100001) ]