Ответ:
Используем свойство: \(\sqrt{a\cdot b}=\sqrt a\cdot\sqrt b\).
- \(\sqrt{121\cdot64}=11\cdot8=88\).
- \(\sqrt{0.36\cdot49}=0.6\cdot7=4.2\).
- \(\sqrt{12\frac{1}{4}}=\sqrt{\frac{49}{4}}=\frac{7}{2}=3\frac{1}{2}\).
- \(\sqrt{10\frac{9}{16}}=\sqrt{\frac{169}{16}}=\frac{13}{4}=3\frac{1}{4}\).
- \(\sqrt{0.04\cdot81\cdot25}=0.2\cdot9\cdot5=9\).
- \(\sqrt{0.09\cdot16\cdot0.04}=0.3\cdot4\cdot0.2=0.24\).
- \(\sqrt{1\frac{7}{9}\cdot\frac{4}{25}}=\sqrt{\frac{16}{9}\cdot\frac{4}{25}}=\sqrt{\frac{64}{225}}=\frac{8}{15}\).
- \(\sqrt{\frac{121}{144}\cdot2\frac{1}{4}}=\sqrt{\frac{121}{144}\cdot\frac{9}{4}}=\sqrt{\frac{121}{64}}=\frac{11}{8}=1\frac{3}{8}\).
Ответ: 1) 88; 2) 4,2; 3) 3 1/2; 4) 3 1/4; 5) 9; 6) 0,24; 7) 8/15; 8) 1 3/8.
