Cubes & cuboids

A Basic introductory demo session on Cubes and Cuboids with examples

1. WELCOME

2. SOLID SHAPES

3. CUBE CUBOID SPHERE CONE CYLINDER 3-D SHAPES

4. CUBE & CUBOID CUBE CUBOID

5. CUBOID 6 Rectangular faces 8 Vertices 12 Edges PROPERTIES OF CUBOID l - length b - breadth h- height DIMENSIONS OF CUBOID

6. SURFACE AREA OF CUBOID T S A Total Surface Area of a cuboid (TSA) = Sum of all the rectangular faces = Area ( front + back + top + bottom + left + right)

7. PROBLEM : Given a cuboid having dimension given as, length = 8 cm, breadth = 6 cm and height = 5 cm. F ind the TSA of a cuboid. TSA Solution : Given l = b = h = = 2 Therefore , the total surface area of the given cuboid is 236 cm². 8 cm 6 cm 5 cm ( 8×6 + 6×5 + 5×8 )

8. SURFACE AREA OF CUBOID L S A Lateral Surface Area of a cuboid (LSA) = Sum of all the lateral rectangular faces = Area ( front + back + left + right)

9. CUBE 6 Square faces 8 Vertices 12 Edges PROPERTIES OF CUBE

10. SURFACE AREA OF CUBE Total Surface Area of a cube (TSA) = Sum of all the square faces T S A     L S A Lateral Surface Area of a cube (LSA) = Sum of all the lateral square faces      

11. PROBLEM : Find the length of the edge of the cube, if its area is 2400 sq.cm. Solution : Given =     2400 cm² 2400 cm² =   2400 / 6 = 400 = 400   = 20   Therefore , the length of the edge of the cube is 20 cm. a

12. SUMMARY : CUBOID : Properties : 6 Rectangular Faces 8 Vertices 12 Edges Surface area x CUBE : Cube is a cuboid with all its dimensions equal. Properties : 6 Square Faces 8 Vertices 12 Edges Surface area