z^2 = 16
square root both sides
x=4 (plus or minus)
the area of a square is base x height, for a square it’s just side squared
if the area is 225, the side would be the square root of 225 and the units would be in instead of in^2
there aren’t any options so i’m not sure what it’s looking for but this is my best guess:
11.9860 is greater than the square root of 121.
square root of 121 is 11
irrational numbers would be the ones with the root. the rational numbers would be 0 and -1/16.
5/45 is 0.1111111… so it would be 0.1 with the line over the 1 to indicate that it’s a recurring decimal