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 surface area and volume class 9 Chapter 13 notes, some important definitions, surface area and volume formulas are given below:

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

Also, read:

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, the surface area is the amount of space covering the outside of a three-dimensional shape.

What is Volume?

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

Shape 

Surface Area Formula

Variables

Cube 6a2 a = side of a cube
Cuboid 2(lb+bh+lh)

l = length

b = breadth

h = height

Sphere 4πr2 r = Radius
Right rectangular parallelopiped 2lw + 2lh + 2wh.

l = length

w = width

h = height

Prism 2B +( p x h)

B = Area of base

h = Height of prism

p= perimeter of the base

Right Circular Cylinder 2πr(h +r)

r  = radius 

h = height of cylinder

Pyramid B + L

B = Area of base

L=Lateral Area

Right Circular Cone πr(r +√(r2+h2)

r  = radius 

h = height of a cone

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

Surface Area and Volume Class 9 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

Surface Area and Volume Class 9 Important Questions

Surface Areas And Volumes Class 9

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