Квадрат разрезан на прямоугольники. В каждом прямоугольнике отмечена одна сторона. Доказать, что сумма длин отмеченных сторон не меньше стороны квадрата.
Квадрат разрезан на прямоугольники. В каждом прямоугольнике отмечена одна сторона. Доказать, что сумма длин отмеченных сторон не меньше стороны квадрата.
BY Непрерывное математическое образование
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WhatsApp, a rival messaging platform, introduced some measures to counter disinformation when Covid-19 was first sweeping the world. The message was not authentic, with the real Zelenskiy soon denying the claim on his official Telegram channel, but the incident highlighted a major problem: disinformation quickly spreads unchecked on the encrypted app. On Feb. 27, however, he admitted from his Russian-language account that "Telegram channels are increasingly becoming a source of unverified information related to Ukrainian events." Although some channels have been removed, the curation process is considered opaque and insufficient by analysts. Anastasia Vlasova/Getty Images
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