score:3

Accepted answer

You request a 3d context instead of a 2d context in the last chart. So change this

var ctx3 = $("#d3").get(0).getContext("3d");
var myChart3 = new Chart(ctx3).Doughnut(doughnutData3,  {
    percentageInnerCutout: 90
});  

to this

var ctx3 = $("#d3").get(0).getContext("2d");
var myChart3 = new Chart(ctx3).Doughnut(doughnutData3,  {
    percentageInnerCutout: 90
});

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