Ответ:

  1. \(\sqrt{25\cdot16\cdot9}=5\cdot4\cdot3=60\).
  2. \(3\frac1{16}=\frac{49}{16}\), \(2\frac{14}{25}=\frac{64}{25}\). Поэтому \(\sqrt{\frac{49}{16}\cdot\frac{64}{25}}=\frac{7\cdot8}{4\cdot5}=2.8\).
  3. \(\sqrt{0.64\cdot0.36\cdot9}=0.8\cdot0.6\cdot3=1.44\).
  4. \(\frac{\sqrt{1000}}{\sqrt{160}}=\sqrt{\frac{1000}{160}}=\sqrt{\frac{25}{4}}=\frac52\).
  5. \(\frac{\sqrt{108}}{\sqrt{12}}=\sqrt9=3\).
  6. \(\sqrt{32}\cdot\sqrt2=\sqrt{64}=8\).
  7. \(\sqrt{45}\cdot\sqrt5=\sqrt{225}=15\).