问题描述：
英语翻译
Given a set of 148 points in a square with side length one,show that there is always a set of four of these points which lie interior to a circular disc of radius 1/9
Given a set of 148 points in a square with side length one,show that there is always a set of four of these points which lie interior to a circular disc of radius 1/9
问题解答：
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