Surface Area and Volume

🔹 What Is It?

• Surface area is the total area of all outer faces of a 3D shape.
  
  

• Volume is the amount of space a 3D object takes up.
  
  

🧩 Clue to Remember

• Surface area = paint the outside
  
  

• Volume = fill the inside
  
  

🔹 Example

• A cube with side length 4:
  
  

  • Surface Area = 6 × (4 × 4) = 96 square units
    
    

  • Volume = 4 × 4 × 4 = 64 cubic units
    
    

💡 Why It Matters

Surface area and volume are key in packaging, storage, and construction — when you need to cover or fill objects.

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