MathDB
2022 PUMaC Geometry A2 / B4

Source:

September 10, 2023
geometryconics

Problem Statement

An ellipse has foci AA and BB and has the property that there is some point CC on the ellipse such that the area of the circle passing through AA, BB, and, CC is equal to the area of the ellipse. Let ee be the largest possible eccentricity of the ellipse. One may write e2e^2 as a+bc\frac{a+\sqrt{b}}{c} , where a,ba, b, and cc are integers such that aa and cc are relatively prime, and b is not divisible by the square of any prime. Find a2+b2+c2a^2 + b^2 + c^2.