Вычисление значений выражений

1. a) $$\sqrt{169} \cdot \sqrt{9} = 13 \cdot 3 = 39$$
2. б) $$\sqrt{289} \cdot 25 = 17 \cdot 5 = 85$$
3. в) $$\sqrt{361} \cdot 16 \cdot 49 = 19 \cdot 4 \cdot 7 = 532$$
4. г) $$\frac{\sqrt{81 \cdot 36}}{\sqrt{625}} = \frac{\sqrt{81} \cdot \sqrt{36}}{\sqrt{625}} = \frac{9 \cdot 6}{25} = \frac{54}{25} = 2,16$$
5. д) $$\sqrt{\frac{324}{25}} \cdot \sqrt{\frac{225}{144}} = \frac{\sqrt{324}}{\sqrt{25}} \cdot \frac{\sqrt{225}}{\sqrt{144}} = \frac{18}{5} \cdot \frac{15}{12} = \frac{18}{5} \cdot \frac{5}{4} = \frac{18}{4} = 4,5$$
6. e) $$\sqrt{(24,6)^2} = |24,6| = 24,6$$
7. ж) $$0,5 \cdot \sqrt{(-4)^2} = 0,5 \cdot |-4| = 0,5 \cdot 4 = 2$$

Ответ:

1. 39
2. 85
3. 532
4. 2,16
5. 4,5
6. 24,6
7. 2