Ответ:\(3\sqrt{15}\approx11.62\).\(12\sqrt{215}\approx175.95\).\(0.4\sqrt{315}\approx7.10\).\(0.1\sqrt{95}:5\approx0.19\).Ответ: 1) 11,62; 2) 175,95; 3) 7,10; 4) 0,19.