# Wikipedia nonsense - meridian and metre

## Overview

Combining facts from the Wikipedia articles "History of the metre" and "Meridian" yields an earth circumference of around 80000 km.

## Input

1) en.wikipedia.org/wiki/Meridian_(geography)‎

```A meridian (or line of longitude) is the half of
an imaginary great circle on the Earth's surface
```

2) en.wikipedia.org/wiki/History_of_the_metre‎

```1⁄10,000,000 part of the quarter of a meridian
```

## Output

From 2:

```1 m = 1⁄10,000,000 of the quarter of a meridian
```

Insert 1:

```1 m = 1⁄10,000,000 of the quarter of a (half of
an imaginary great circle on the Earth's surface)
```

Reduce

```1 m = 1⁄10,000,000 of 1/4 of 1/2 of imaginary great circle on the Earth's surface
1 m = 1/80,000,000 of imaginary great circle on the Earth's surface
```

Reformulate

```imaginary great circle on the Earth's surface = 80,000,000 m = 80,000 km
```

## Compare with equator

Compare that with:

```Equator - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/Equator‎
Wikipedia
Other planets and astronomical bodies have equators similarly defined.
Earth's equator is  about 40,075 kilometres (24,901 mi) long
```