Complete Pyramid (Rectangular Base) + Common Tangents (DCT, TCT) | Mensuration & Geometry | SSC CGL

DCT² − TCT² = 4Rr | Common Tangents Trick + Rectangular Pyramid Full Concept | SSC CGL SSC CGL Geometry + Mensuration: Pyramid & Two Circles Common Tangents | Abhas Saini Maths Common Tangents to Two Circles + Pyramid Formulas | Complete Concept & Tricks | SSC CGL 202 Telegram: https://telegram.me/Verbalmath BUY PAID COURSE ? android: https://play.google.com/store/apps/de... ios: https://apps.apple.com/in/app/verbal-... website: primemock.com Whatsaapp 7428109012 SSC CGL Geometry aur Mensuration ka ek hi video me full concept: Rectangular Base wala Pyramid (Volume, Slant Height, LSA, TSA, Lateral Edge, Frustum) aur Common Tangents to Two Circles (DCT, TCT, 4Rr relation). Is video me aapko formulas, trick aur exam-level questions milenge, jo SSC CGL, CGL Mains, CHSL, CPO, RRB NTPC aur Group D ke liye kaam aayenge. ⏱️ CHAPTERS 00:00 Introduction [समय] Pyramid with Rectangular Base: Definition aur Parts [समय] Volume = 1/3 × l × b × h [समय] Slant Heights (dono alag kyu hoti hain) [समय] LSA aur TSA [समय] Lateral Edge ki length [समय] Pyramid ko parallel kaatna (Frustum) [समय] Pyramid ke Previous Year Questions [समय] Common Tangents to Two Circles: DCT vs TCT [समय] DCT = √(d² − (R − r)²) [समय] TCT = √(d² − (R + r)²) [समय] DCT² − TCT² = 4Rr (Useful Relation) [समय] Circles ki 6 conditions: 4, 3, 2, 1, 0, ∞ tangents [समय] Touching circles: PQ = 2√(Rr) aur PQ = 2r [समय] Practice Questions 📌 KEY FORMULAS Pyramid Volume = ⅓ × l × b × h Slant heights = √(h² + b²/4) aur √(h² + l²/4) LSA = l·√(h² + b²/4) + b·√(h² + l²/4) TSA = LSA + l × b Lateral Edge = √(h² + (l² + b²)/4) DCT = √(d² − (R − r)²) TCT = √(d² − (R + r)²) DCT² − TCT² = 4Rr Externally touching circles: PQ = 2√(Rr) Equal radii circles: PQ = 2r 📲 SUPER 100 / SPARTAN BATCH (SSC CGL & CGL Mains) Full course, notes aur practice ke liye WhatsApp karein: 7428109012 ▶️ Channel: Abhas Saini Maths Roz naye Maths concepts, tricks aur PYQs ke liye channel subscribe karein aur bell icon dabayein 🔔 #SSCCGL #Mensuration #AbhasSainiMaths #Pyramid #CommonTangents #Geometry #SSCCGLMains #RRBNTPC #Maths #CompetitiveExams