MathDB
ASU 510 All Soviet Union MO 1989 convex polygon area < \pi /4

Source:

August 14, 2019
geometryconvex polygongeometric inequalityarea

Problem Statement

A convex polygon is such that any segment dividing the polygon into two parts of equal area which has at least one end at a vertex has length <1< 1. Show that the area of the polygon is <π/4< \pi /4.