23.91
23.9165215
570
The answer is 600
572.0
570
It is: 600
570.
570 is the nearest ten. 600 is the nearest hundred.
To the nearest ten it is 570. To the nearest hundred it is 600.
A square number, or perfect square, is the square of an integer. 232 is less than 572, 242 is more, so it is not the square of an integer.
572.0
It is 600