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freeCodeCamp/curriculum/challenges/chinese/10-coding-interview-prep/project-euler/problem-476-circle-packing-ii.md

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---
id: 5900f5481000cf542c51005b
title: 问题476圆形包装II
challengeType: 5
videoUrl: ''
---
# --description--
令Rabc为具有边长ab和c的三角形内的三个非重叠圆所覆盖的最大面积。令Sn为Rabc在所有整数三元组abc上的平均值使得1≤a≤b≤c<a +b≤n给出S2 = R1,1,1≈0.31998S5≈1.25899。查找S1803四舍五入到小数点后面的小数点后5位。
# --hints--
`euler476()`应返回110242.87794。
```js
assert.strictEqual(euler476(), 110242.87794);
```
# --solutions--