MathDB
ratio of sum of areas between 4 mutually internally tangent circles

Source: Cono Sur Shortlist 2005 G2

July 26, 2019
ratiotangent circlesareasgeometry

Problem Statement

Find the ratio between the sum of the areas of the circles and the area of the fourth circle that are shown in the figure Each circle passes through the center of the previous one and they are internally tangent. https://cdn.artofproblemsolving.com/attachments/d/2/29d2be270f7bcf9aee793b0b01c2ef10131e06.jpg