9th Class Maths | Surface Area & Volume | Exercise 11.1 | LSA & TSA of Cone | All 8 Problems

Описание: Welcome to this Class 9 Mathematics video lesson!
In this video, we will learn Surface Area and Volume – Exercise 11.1 from the chapter Surface Areas & Volumes.

We will solve all 8 problems related to Lateral Surface Area (LSA / CSA) and Total Surface Area (TSA) of a Cone with clear step-by-step explanations.

📘 Topics Covered in This Video:
✔ What is a cone?
✔ Formula for Lateral/Curved Surface Area – CSA = π r l
✔ Formula for Total Surface Area – TSA = π r (r + l)
✔ How to find Slant Height using Pythagoras theorem
✔ State Board / NCERT exam-oriented approach
✔ Complete solutions for Ex 11.1 (All 8 Questions)

📌 Lesson Details
• Class: 9th Standard
• Chapter: Surface Areas and Volumes (Chapter 11)
• Exercise: 11.1
• Medium: English
• Boards: CBSE / Telangana / Andhra Pradesh / State Board
• Teacher: (Your Channel Name)

✨ Formulas in this Lesson
• Curved/Lateral Surface Area of Cone = π r l
• Total Surface Area of Cone = π r (r + l)
• Slant Height (l) = √(r² + h²)

👨‍🏫 Why Watch This Video?
• Easy explanation
• Best for classwork & homework help
• Useful for exam preparation
• Clear steps & simplified methods
• Perfect for both beginners & revision

📍 More Topics Coming Soon
• Cylinder – CSA & TSA
• Sphere and Hemisphere – Surface Area & Volume
• Model Questions & Practice Worksheets
• Chapter-wise Complete Maths Syllabus

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I will answer your questions or make a special video for you.

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#Class9Maths #SurfaceAreasAndVolumes #Exercise11_1 #ConeLSA #ConeTSA #NCERTMaths #MathsEnglishMedium #Geometry #CBSEClass9 #TSAPMaths