2201

**Technology / String around the earth!!**

« **on:**27/03/2008 12:00:11 »

Circumference(C) = 2πR

Increase by 1m =>

C+1 = 2π(R+x) where x is the increase in radius (how much it would be above the ground)

so 2πR+1 = 2π(R+x)

x = 1/(2π) = 15.9154943 cm (approx)

No need to know the size of the earth

Increase by 1m =>

C+1 = 2π(R+x) where x is the increase in radius (how much it would be above the ground)

so 2πR+1 = 2π(R+x)

x = 1/(2π) = 15.9154943 cm (approx)

No need to know the size of the earth