Mensuration Class 8 | Introduction to Solid Shapes | Cube, Cuboid & Cylinder Explained

In this video, we explain the concept of Solid Shapes from Chapter 9 – Mensuration (Class 8 Maths).

This lesson is designed to build a strong foundation before learning surface area formulas.

🔍 Topics Covered in This Video
🔹 Introduction to 3D (Solid) Shapes

✔ Difference between plane figures (2D) and solid figures (3D)
✔ Understanding faces, edges, and curved surfaces

🔹 Cuboid

✔ Identification of congruent faces
✔ Real-life examples (boxes, bricks)
✔ Net of a cuboid (visual explanation)

🔹 Cube

✔ All faces equal
✔ Why length = breadth = height
✔ Cube nets and folding

🔹 Cylinder

✔ Circular faces and curved surface
✔ Understanding right circular cylinder
✔ Why some shapes (Fig 9.13) are not cylinders
✔ Real-life cylindrical objects

🔹 Hands-on Activities (Explained from NCERT)

✔ Cutting & unfolding boxes
✔ Checking congruent faces
✔ Wrapping surfaces with paper
✔ Visualising shapes using nets

This conceptual video prepares you perfectly for the Surface Area problems that follow in Exercise 9.2.

🎯 Who Should Watch

Class 8 students learning Mensuration

Students who want clarity before formulas

Anyone confused between area vs surface area or 2D vs 3D shapes

📘 NCERT Coverage

📌 Class 8 Maths
📌 Chapter 9 – Mensuration
📌 Section: Solid Shapes

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