Вычислите: a) 6$$\sqrt{\frac{1}{9}}$$ + 10$$\sqrt{1,96}$$ ; б) 18-4$$\sqrt{\frac{1}{64}}$$; в) $$(3\sqrt{2,5})^2$$.

а) 6$$\sqrt{\frac{1}{9}}$$ + 10$$\sqrt{1,96}$$ = 6 * (1/3) + 10 * 1,4 = 2 + 14 = 16

б) 18-4$$\sqrt{\frac{1}{64}}$$ = 18 - 4*(1/8) = 18 - 0.5 = 17.5

в) $$(3\sqrt{2,5})^2$$ = 9 * 2,5 = 22.5