Surface Area and Volume Class 9

Surface Area and Volume class 9 notes contain detailed and accurate information that will enable students to get a good grip on the concepts discussed in chapter 13 of the maths textbook. Students will also get a glimpse of the important questions and once they get familiar with the notes they will significantly increase their chances of scoring higher marks in the exams. To give you a brief outlook of Chapter 12 notes, it deals with topics like;

  • What is Surface Area
  • Surface Area Formula of some common solids
  • Volume Formula of Some Important Solids
  • Examples
  • Important Questions

What Is Surface Area?

According to the definition of surface area, it is described as the area of a material that is used in covering a geometric solid. To put it in more simple terms, surface area is the amount of space covering the outside of a three-dimensional shape.

Volume Definition 

The volume is the sum of how much a figure can retain. In general, volume helps us determine the capacity of a figure. It is measured in cubic units.

Surface Areas of Common Solids

Surface Areas And Volumes Class 9

Volume of Common Solids

Shape

Equation

Variables

Cube

a3 a = side of cube
Cuboid lbh l = length

b = breadth

h = height

Sphere 4/3 Πr3 r = Radius
Right rectangular parallelepiped lwh l = length

w = width

h = height

Prism Bh B = Area of base

h = Height of prism

Right circular cylinder Πr2   r  = radius 

h = height of cylinder

Pyramid ⅓ Bh B = Area of base

h = Height of pyramid

Right circular cone ⅓ Πr2  

r  = radius 

h = height of cone

Examples

Surface Areas And Volumes Class 9
Surface Areas And Volumes Class 9
Surface Areas And Volumes Class 9
Surface Areas And Volumes Class 9

 

 

Important Questions

Surface Areas And Volumes Class 9

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