# 182 geometry/earth.band.p

## Description

This article is from the Puzzles FAQ,
by Chris Cole chris@questrel.questrel.com and Matthew Daly
mwdaly@pobox.com with numerous contributions by others.

# 182 geometry/earth.band.p

How much will a band around the equator rise above the surface if it is

made one meter longer? Assume the equator is a circle.

geometry/earth.band.s

The formula for the circumference of a circle is 2 * pi * radius. Therefore,

if you increase the circumference by 1 meter, you increase the radius by

1/(2 * pi) meters, or about 0.16 meters.

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