# The diameter of Earth, about 8,000 miles, is about 4 times the diameter of the moon. What is the approximate diameter of the moon?

##### 1 Answer

Nov 13, 2016

The diameter of the moon is approximately 2,000 miles.

#### Explanation:

First, because we are solving for the approximate diameter of the moon, let's call the variable representing the diameter of the moon

And let's call the diameter of the Earth

The problem provides the relationship of the diameter of the Earth compared to the diameter of the moon. If equation for it can be written as:

Because the diameter of the Earth (