# What is the circumference of the Earth's orbit around the Sun?

Apr 28, 2018

Approximately $940$ million kilometers.

#### Explanation:

A rough approximation can be deduced from the following data:

• The Earth's mean distance from the sun is approximately $150$ million kilometers.

• The Earth's orbit is roughly circular.

The circumference of a circle is given by the formula $2 \pi r$ where $r$ is the radius.

So in the case of the Earth's orbit, it is roughly:

$2 \pi \cdot 150 \setminus \text{million km" ~~ 940 \ "million km}$