$\text{a)}\sqrt{0}=0$  

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$\text{b)}\sqrt[3]{0}=0$  

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$\text{c)}\sqrt{169}=\sqrt{{13}^2}=13$  

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$\text{d)}\sqrt[3]{64}=\sqrt[3]{4^3}=4$  

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$\text{e)}\sqrt{{\left(-5\right)}^2}=\sqrt{5^2}=5$  

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$\text{f)}\sqrt[3]{-125}=-\sqrt[3]{125}=-\sqrt[3]{5^3}=-5$  

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$\text{g)}\sqrt[3]{0,001}=\sqrt[3]{{\left(0,1\right)}^3}=0,1$  

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$\text{h)}\sqrt{324}=\sqrt{81\cdot 4}=\sqrt{81}\cdot \sqrt{4}=\sqrt{9^2}\cdot \sqrt{2^2}=9\cdot 2=18$  

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$\text{i)}\sqrt{3,24}=\sqrt{{\left(1,8\right)}^2}=1,8$  

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$\text{j)}\sqrt{0,0009}=\sqrt{{\left(0,03\right)}^2}=0,03$  

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$\text{k)}\sqrt{\frac{1}{169}}=\frac{\sqrt{1}}{\sqrt{169}}=\frac{1}{\sqrt{{13}^2}}=\frac{1}{13}$  

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$\text{l)}\sqrt[3]{\frac{1}{125}}=\frac{\sqrt[3]{1}}{\sqrt[3]{125}}=\frac{1}{\sqrt[3]{5^3}}=\frac{1}{5}$