i forgot the circumference of the earth, so i just sat down and tried to figure it out by estimating how wide various continents and oceans are and adding them together. i was actually pretty close too..
i like sitting down and randomly doing math sometimes. maybe i'll try to figure out how fast satellites actually travel. i know they orbit maybe, 400km above earth surface? if it takes 90 minutes for one to make one complete revolution about the earth and now that i know the earth's circumference....... this isn't easy to do in my head......
avg 400km miles above earth, earth circumference is 40,000km which makes that 40,000/3 diameter, so roughly 13,000km (Since pi is actually a little over 3 and 13x3=39 plus the bit extra). so the diameter of a satellite's orbit is probably around 14,000 with that 400 tacked on to either side.14,000x3 and a bit is probably about 43,000km, travelled in 90 minutes (1.5hr) is like 29,000km/hr. jesus that's fast.
