MathDB
2018 Theme #9

Source:

November 13, 2018
geometry

Problem Statement

Circle ω1\omega_1 of radius 11 and circle ω2\omega_2 of radius 22 are concentric. Godzilla inscribes square CASHCASH in ω1\omega_1 and regular pentagon MONEYMONEY in ω2\omega_2. It then writes down all 20 (not necessarily distinct) distances between a vertex of CASHCASH and a vertex of MONEYMONEY and multiplies them all together. What is the maximum possible value of his result?