How to get diameter of inner ring in pie highchart?

Question

I can get diameter of external ring by plotHeight but is there any way to get diameter of inner ring of pie highchart? (https://jsfiddle.net/noy986m7/23/)

Highcharts.chart('container', {
   chart: {
        type: 'pie',
    },
    series: [{
        innerSize: "40%",
        data: [{
            y: 70.67,
        }, {
            y: 14.77
        }]
    }]
});

<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/variable-pie.js"></script>
<script src="https://code.highcharts.com/modules/exporting.js"></script>
<script src="https://code.highcharts.com/modules/export-data.js"></script>
<script src="https://code.highcharts.com/modules/accessibility.js"></script>

<figure class="highcharts-figure">
    <div id="container"></div>
</figure>

Answer 1

const getInnerDiameter = (series) => {
    const r = [];
    series.forEach((item) => {
        item.data.forEach(point => {
            r.push(point.shapeArgs.innerR);
        });
    });
    return Math.min(...(r.filter(Boolean))) * 2;
};

Highcharts.chart('container', {
   chart: {
        type: 'pie',
                events: {
            load: function () {
               console.log("externelD: " + this.plotHeight, "innerD: " + getInnerDiameter(this.series))
            },
        },
    },
    series: [{
        innerSize: "40%",
        data: [{
            y: 70.67,
        }, {
            y: 14.77
        }]
    }]
});

<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/variable-pie.js"></script>
<script src="https://code.highcharts.com/modules/exporting.js"></script>
<script src="https://code.highcharts.com/modules/export-data.js"></script>
<script src="https://code.highcharts.com/modules/accessibility.js"></script>

<figure class="highcharts-figure">
    <div id="container"></div>
</figure>