CBSE Class 9 Maths Chapter 13 Surface Areas and Volumes Revision Notes

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CBSE Class 9 Maths Chapter 13 Surface Areas and Volumes Revision Notes

 

Revision is very important for better conceptual understanding and securing good marks, and for Revision, Revision Notes are always considered the best. Revision Notes can be very beneficial for students to revise all their previously prepared chapters and concepts, especially during the examination times when they have to revise the whole syllabus in a limited time period.

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What is Surface area?

 

The surface area of a solid object is a measure of the total area that the surface of the object occupies.

What is Volume?

 

Volume is the quantity of three-dimensional space enclosed by a closed surface.

 

Different Types of 3-D figures

 

Cuboid:

Cuboid is a solid bounded by six faces that are rectangular in shape, having 6 faces, 8 vertices, and 12 edges.

  • Lateral Surface area: 2h(l + b)
  • Total Surface area: 2(lb + bh + lh)
  • Volume: lbh

 

Cube:

Cuboid whose length, breadth and height are equal is called a cube.

  • Lateral Surface area: 4a2
  • Total Surface area: 6a3
  • Volume: a3

 

CBSE Class 9 Maths Chapter 13 Surface Areas and Volumes Revision Notes PDF

 

Surface Area And Volumes

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