---
id: 5d8a4cfbe6b6180ed9a1ca34
title: Step 87
challengeType: 0
dashedName: step-87
---
# --description--
Chain `innerRadius` to the arc and pass it `0` (zero). This is set to zero to make a traditional pie chart, you would use a larger inner radius to create a doughnut chart.
# --hints--
test-text
```js
assert(
/const pieArc = d3\.arc\(\)\s*\.outerRadius\(100\)\s*\.\s*innerRadius\s*\(\s*0\s*\)/g.test(
code
)
);
```
# --seed--
## --before-user-code--
```html
D3 Dashboard
```
## --seed-contents--
```html
```
# --solutions--
```html
```