Volume and Surface Area

🔹 What Is It?

• Volume is the space inside a 3D object.
  
  

• Surface area is the total area of all the faces on the outside.
  
  

🧩 Clue to Remember

• Volume = how much it holds
  
  

• Surface Area = how much to wrap it
  
  

🔹 Example

A box (rectangular prism) with
length = 3 units, width = 2 units, height = 4 units:

• Volume = 3 × 2 × 4 = 24 cubic units
  
  

• Surface Area = add up the areas of all 6 sides
  
  

💡 Why It Matters

Helps with packing, pouring, covering, designing boxes and tanks.