\input{../../common}

\begin{document}
  %<*content>
  \providecommand{\tikzcolor}{black}
  \begin{tikzpicture}[draw=\tikzcolor, text=\tikzcolor, fill=\tikzcolor, scale=0.3]
    \draw[fill=green, fill opacity=0.2](0,0) circle (12.5);
    \draw[fill=green, fill opacity=0.2](0,-1) circle (10.7);
    \draw[fill=green, fill opacity=0.2](0,-2) circle (8.8);
    \draw[fill=green, fill opacity=0.2](0,-3) circle (6.9);
    \draw[fill=green, fill opacity=0.2](0,-4) circle (5.3);
    \draw[fill=green, fill opacity=0.2](0,-5) circle (3.6);
    \draw(0,-4) node {\fontsize{18}{20}\selectfont $\mathbb{N}$};
    \draw(-1.8,-6) node {$0$};
    \draw(-0.2,-7) node {$3$};
    \draw(1.7,-5.5) node {$10$};
    \draw(0,-0.1) node {\fontsize{18}{20}\selectfont $\mathbb{Z}$};
    \draw(-3,-0.9) node {$-5$};
    \draw(2.8,-1.5) node {$-1$};
    \draw(0,2.6) node {\fontsize{18}{20}\selectfont $\mathbb{D}$};
    \draw(-2.2,2.1) node {$\frac{1}{4}$};
    \draw(3.1,1.6) node {$1,26$};
    \draw(0,5.4) node {\fontsize{18}{20}\selectfont $\mathbb{Q}$};
    \draw(-2.4,4.6) node {$2,111\dots$};
    \draw(3,4.6) node {$\frac{1}{3}$};
    \draw(0,8.2) node {\fontsize{18}{20}\selectfont $\mathbb{R}$};
    \draw(-3.5,7.6) node {$\sqrt{2}$};
    \draw(3,7.8) node {$\pi$};
    \draw(0,11) node {\fontsize{18}{20}\selectfont $\mathbb{C}$};
    \draw(-2.1,10.6) node {$i$};
    \draw(3,10.5) node {$1+i$};
  \end{tikzpicture}
  %</content>
\end{document}
