make svg circle inside svg circle code example

Example 1: svg circle

<svg width="100" height="100">
  <circle cx="50%" cy="50%" r="10" fill="red"/>
</svg>

Example 2: how to create a circle using svg

<svg width="100" height="100">
  <circle cx="50" cy="50" r="40" stroke="green" stroke-width="4" fill="yellow" />
</svg>