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A park has the shape of a convex pentagon of area

. A man standing at an interior point
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of the park notices that he stands at a distance of at most
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from each vertex of the pentagon. Prove that he stands at a distance of at least
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from each side of the pentagon.
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$(YUG 2)$ A park has the shape of a convex pentagon of area $50000\sqrt{3} m^2$. A man standing at an interior point $O$ of the park notices that he stands at a distance of at most $200 m$ from each vertex of the pentagon. Prove that he stands at a distance of at least $100 m$ from each side of the pentagon.