<svg width="120" height="120"
     viewPort="0 0 120 120" version="1.1"
     xmlns="http://www.w3.org/2000/svg">

    <defs>
        <clipPath id="myClip">
            <circle cx="30" cy="30" r="20"/>
            <circle cx="70" cy="70" r="30"/>
        </clipPath>
    </defs>
    
    <rect x="10" y="10" width="100" height="100"
          clip-path="url(#myClip)" fill='red' />
    
</svg>