[ENEM 2025] 173 📘 GEOMETRIA PLANA Em uma cidade, será construído um túnel que atravessa uma montanha

[173] In a city, a tunnel will be built through a mountain to facilitate the transit of cars and bicycles. Two projects have been drawn up and the diagrams with the front views of these projects are presented in the figure. Project 1 has two tunnels, one exclusively for bicycles and the other for cars. Project 2 has a single tunnel, with spaces reserved for the exclusive transit of bicycles and cars. In both projects, the tunnels have the shape of a straight semi-cylinder of the same length, with lanes for both types of vehicles, separated by walls. The project to be approved will be the one that presents the smallest cross-sectional area, as it will imply a smaller volume of material removed from the mountain. Consider 3 as an approximation for π and disregard the thicknesses of the walls. The project to be approved is ✅ SUPER [APOSTILA] PROF. CAJU: https://caju.tv/SuperApostila ✅ [Playlist] ENEM 2025: https://caju.tv/ENEM2025 ✅ [Playlist] PLANE GEOMETRY ENEM: https://caju.tv/DesvioPadraoENEM ✅ [Subscribe] to the channel: https://caju.tv/yt ✅ [FREE] QUESTION PLATFORM: https://caju.tv/Plataforma ENEM 2025 REG - Math Exam Solved by Prof. Caju. Question 173 from the Blue Exam - ENEM 2025 REG ------------------------------------ Want to contribute to maintaining my work of sharing knowledge throughout Brazil? https://caju.tv/contribuir Follow me on Instagram: @prof.caju   / prof.caju   ------------------------------------ #ENEM2025REG #ENEMMath #ENEM