On 3/8/06 11:39 AM, in article
et, "rw"
wrote:

rb608 wrote:

You have a rope pulled snugly around the earth at the equator (diameter =
7,926 miles +/-). How much length would you need to add to the rope to
raise it 6 inches off the earth at all points?

pi feet

Isn't pi the constant?

My guess was 6(pi) inches. It's C=pi(d), so if we add six inches to d
(which we had converted from feet to inches), we have C=pi(d+6). Balances
out with 6(pi). No?


Bill