Question

Is the square root of 0.25 rational or irrational? PLEASE explain

Answer 1

$It \ is\ rational\ number\ because\ we\ can\ write\ it\ as\ a\ quotient\ of\\two\ numbers:\\\\ \sqrt{0,25}=0,5=\frac{5}{10}=\frac{1}{5}$

Answer 2

$\sqrt{0.25}\ is\ a\ rational\ number\ because\ \sqrt{0.25}=\sqrt{0.5^2}=0.5\in\mathbb{Q}$