JSFiddle - React, Tailwind, and code Playground
HTML
<script src="http://d3js.org/d3.v2.min.js"></script>
JavaScript
var vis = d3.select("body").append("svg")
var pi = Math.PI;
var arc = d3.svg.arc()
.innerRadius(50)
.outerRadius(55)
.startAngle(90 * (pi/180)) //converting from degs to radians
.endAngle(270 * (pi/180)) //just radians
vis.append("path")
.attr("d", arc)
.attr("transform", "translate(100,50)")