# How many miles to earth's core?

##### 1 Answer

Dec 27, 2015

That's really the **mean radius** of the Earth, which is about

To convert it to miles:

#6371 cancel"km" xx (10^5 cancel"cm")/(1 cancel"km") xx (1 cancel"in.")/(2.54 cancel"cm") xx (1 cancel"ft.")/(12 cancel"in.") xx "1 mi."/(5280 cancel"ft.")#

#~~ color(blue)" 3958.76 mi"#