Trying to use mathjax in svg

I’m trying to make a svg gràfic in my web page. I want to write in it a LaTeX formula using mathjax but it doesn’t work. Here is my code, althought I think it is not the problem. Can anyone help me? Thanks a lot!

<svg height="250" width="450" > 
    <line x1="0" y1="200" x2="450" y2="200" style="stroke:rgb(0,0,0);stroke-width:2" ></line>
    <line x1="230" y1="200" x2="230" y2="0" style="stroke:rgb(0,0,0);stroke-width:1" />
    <path d="M 313 200 A 283 283 0 0 0  230 0 l -200 200 m 100 -100" fill="none" stroke="black" stroke-width="1"/>
    <text x="10" y="30" style="fill:blue;font-size:10px">$sqrt{2}$</text>
</svg>