Pool Circles

Requires a Wolfram Notebook System
Interact on desktop, mobile and cloud with the free Wolfram Player or other Wolfram Language products.
Given an equilateral triangle with side length 2, the radius of any of the inscribed equal circles depends on the number of circles inscribed. Before reading Details, see if you can notice a pattern in the answer as you vary
.
Contributed by: Abraham Gadalla (July 2011)
Open content licensed under CC BY-NC-SA
Snapshots
Details
For a given , the radius of a circle is
. The ratio of the total area of the circles to the area of the triangle is
, which approaches
as
approaches
.
This Demonstration is based on [1], problem 15, Chapter 11.
Reference
[1] J. Stewart, Calculus: Early Transcendentals, 5th ed., Belmont, CA: Brooks/Cole, 2007.
Permanent Citation