2018-09-30 22:01:58 +00:00
|
|
|
---
|
|
|
|
id: 5900f44b1000cf542c50ff5d
|
|
|
|
challengeType: 5
|
|
|
|
title: 'Problem 222: Sphere Packing'
|
|
|
|
---
|
|
|
|
|
|
|
|
## Description
|
|
|
|
<section id='description'>
|
|
|
|
What is the length of the shortest pipe, of internal radius 50mm, that can fully contain 21 balls of radii 30mm, 31mm, ..., 50mm?
|
|
|
|
|
|
|
|
Give your answer in micrometres (10-6 m) rounded to the nearest integer.
|
|
|
|
</section>
|
|
|
|
|
|
|
|
## Instructions
|
|
|
|
<section id='instructions'>
|
|
|
|
|
|
|
|
</section>
|
|
|
|
|
|
|
|
## Tests
|
|
|
|
<section id='tests'>
|
|
|
|
|
|
|
|
```yml
|
2018-10-04 13:37:37 +00:00
|
|
|
tests:
|
|
|
|
- text: <code>euler222()</code> should return 1590933.
|
2018-10-20 18:02:47 +00:00
|
|
|
testString: assert.strictEqual(euler222(), 1590933, '<code>euler222()</code> should return 1590933.');
|
2018-09-30 22:01:58 +00:00
|
|
|
|
|
|
|
```
|
|
|
|
|
|
|
|
</section>
|
|
|
|
|
|
|
|
## Challenge Seed
|
|
|
|
<section id='challengeSeed'>
|
|
|
|
|
|
|
|
<div id='js-seed'>
|
|
|
|
|
|
|
|
```js
|
|
|
|
function euler222() {
|
|
|
|
// Good luck!
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
euler222();
|
|
|
|
```
|
|
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
</section>
|
|
|
|
|
|
|
|
## Solution
|
|
|
|
<section id='solution'>
|
|
|
|
|
|
|
|
```js
|
|
|
|
// solution required
|
|
|
|
```
|
|
|
|
</section>
|