Step-by-step explanation:
[tex] \sqrt{1.44} [/tex]
[tex] \sqrt{ \frac{144}{100} } [/tex]
[tex] \frac{ \sqrt{144} }{ \sqrt{100}} [/tex]
[tex] \frac{12}{10} [/tex]
[tex] \frac{6}{5} [/tex]
= 1.2