How is the radius of a circle related to the circle’s circumference? How much must the radius be increased to produce a 1-meter change in the circumference?

Mitchy T wrote:

Im not entirely sure i understand why your confused ...

I’m not confused, Mitchy. I was simply responding to your “Brain Teaser.”


PS: You really should pay more attention to your grammar and punctuation.

You can compare the area of the the circle enclosed in both cases, find the difference and divide by the circumference of the circle midway between the two.

Maybe 1/(2*Pi) m?

Last edited by Bob Nob (2007-03-30 16:09:05)

I'm glad this one was pulled from the ashes. I recently worked this one out because it was a question our math department here at Longwood University posed as their monthly brain teaser. You have to solve a transendental equation to get the answer.

I checked my math three or four times, since I was surprised by the answer. You could easily ride an elephant under the string.