- $$\sqrt{0.36 \cdot 25} = \sqrt{0.36} \cdot \sqrt{25} = 0.6 \cdot 5 = 3$$
- $$\sqrt{8} \cdot \sqrt{18} = \sqrt{8 \cdot 18} = \sqrt{144} = 12$$
- $$\frac{\sqrt{27}}{\sqrt{3}} = \sqrt{\frac{27}{3}} = \sqrt{9} = 3$$
- $$\sqrt{2^4 \cdot 5^2} = \sqrt{16 \cdot 25} = \sqrt{400} = 20$$
Ответ: а) 3; б) 12; в) 3; г) 20