Brainteasers

[Oyvoyvoyv]

TruckOSaurus said:

Oyvoyvoyv said:

If you take  Tellus' circuit (about 40000KM) and add 10M to it, how much longer is  Tellus' diameter than before the change?

Quick question : Is the Tellus circuit a perfect circle?

 

In this brainteaser it is, but in reality I doubt it.

 

Gahh, Nordlead put up a hard one. I've been trying for 1 hour now, but I haven't made it yet.

Really a pickle.