Доказательство, которое скрывают в школе | Вся правда об окружности | Длина, площадь, π

🎥 In this video, you'll learn: – Why the ratio of a circle's circumference to its diameter is always the same – How this relates to π – How to logically and clearly prove the formula for the circumference – Where does the formula for the area of ​​a circle come from and why does it look the way it does – Some interesting facts about π 📐 We won't just show you ready-made formulas; we'll also explain where they come from. Everything will be step-by-step, with clear examples, without memorization or cramming. Even if you don't like geometry, you have a chance to finally understand it and even love it. 📊 This video is suitable for: – Students in grades 6–11 – Those preparing for the OGE or USE – Anyone who wants to fully understand this subject 🧠 Formulas don't have to be magic. They become simple when you know where they come from. ✍️ Get your notebook ready, use your brain—it'll be clear, visual, and even beautiful in places! 📌 Timestamps: 0:00 Introduction 0:21 How to find the circumference of a circle using a polygon 11:05 Why the ratio of length to diameter is always π 13:15 Interesting facts about π 15:59 The final formula for the circumference 18:13 Deriving the formula for the area of ​​a circle 24:20 Conclusion 📩 Useful links: ✅ Telegram channel — https://t.me/PhysMath_EXE ✅ Telegram bot for recording — https://t.me/PhysMath_EXE_bot ✅ YouTube — / @physmath_exe ✅ RuTube — https://rutube.ru/channel/69370898/ ✅ TikTok — / physmath_exe ✅ VK group — https://vk.com/physmath_exe 💬 Write in the comments: What math, physics, or computer science topic do you need help with in the next videos? Support the channel: 💷 Donate in USDT (ERC20): 0xb96c4fbee64b20a07da055f74a846e8e6ab597ff 💷 Donate in Toncoin (TON): UQCbVUbmE_KsJSS4r9ldiBeOx32qbuWNy7mGHuMXEyRn_B-_