Squaring the circle today
The purpose of the work is to indicate the modern attitude to the problem of "squaring the circle" - one of the three famous problems of antiquity. This work will consider the history of the problem, which originates from ancient Egypt, interesting attempts to solve the problem by scientists of antiquity using classical methods (ruler and compasses) and non-classical methods (primarily by scientists of ancient Greece), together with the proof of the impossibility of solving the problem (due to number π). Also, the article gives some options for the practical application of the problem of squaring the circle (architecture, design, physics, chemistry). The position of the authors regarding the three tasks of ancient Greece and their future is outlined.