Most people should not reply to such topics.
The height of the tower is 620 meters.
You have to find the angles of your triangle with 20k and 2k sides then plug in 6.5k for the base with the same angles.

It's not a unit, it's a prefix. You're not converting anything, simply expanding the prefix to numeric form.

Converting it is a common misconception.

Sup, dumbass.

This post was edited by ASMOL on Feb 28 2009 03:55am

Indeed, you'd think most people would understand the SI system by now.
The K just means x10^3

He obviously doesn't because he capitalized the M.

Last time I checked M was a prefix itself.

Frogs confusing the yanks with their SI system.