Obliczenia
[tex]3\sqrt{\frac{1}{100}}+\frac{\sqrt{225}}{5}=3\sqrt{(\frac{1}{10})^2}+\frac{\sqrt{15^2}}{5}=\\\\=3\cdot\frac{1}{10}+\frac{15}{5}=\frac{3}{10}+3=0,3+3=\boxed{3,3}[/tex]