Mensuration
We at askmath believe that educational material should be free for everyone. Please use the content of this website for indepth understanding of the concepts. Additionally, we have created and posted videos on our youtube.
We also offer One to One / Group Tutoring sessions / Homework help for Mathematics from Grade 4th to 12th for algebra, geometry, trigonometry, precalculus, and calculus for US, UK, Europe, South east Asia and UAE students.
Affiliations with Schools & Educational institutions are also welcome.
Please reach out to us on [email protected] / Whatsapp +919998367796 / Skype id: anitagovilkar.abhijit
We will be happy to post videos as per your requirements also. Do write to us.
In this section we will discuss about mensuration.
Mensuration is the branch of mathematics which deals with the study of different geometrical shapes,their areas and Volume.In the broadest sense, it is all about the process of measurement. It is based on the use of algebraic equations and geometric calculations to provide measurement data regarding the width, depth and volume of a given object or group of objects. While the measurement results obtained by the use of mensuration are estimates rather than actual physical measurements, the calculations are usually considered very accurate.
There are two types of geometric shapes 1) 2D and 2) 3D
2D shapes are
1) Square 2) Rectangle 3) Parallelogram 4) Rhombus
5) Triangle 6) Trapezoid 7) Circle
3D shapes : They have surface area and volume.
1) Cube 2) Rectangular Prism (Cuboid) 3) Cylinder 4) Cone 5) Sphere and Hemisphere 6) Prism
7) Pyramid.
Some important formulas of 2D shapes
Name of Shape 
Shape 
Formula 
Square 

Perimeter = 4 x s Area = s x s 
Rectangle 

Perimeter = 2l + 2w Area = l x w 
Parallelogram 

Perimeter = 2l + 2b Area = base x height 
Rhombus 

Perimeter 4 x a Area = (d1 x d2)/2 
Triangle 

Perimeter = a + b + c Area = (b x h)/2 
Equilateral Triangle 

Perimeter = 3 x a Area = (√3 a ^{2} ) / 4 
Trapezoid 

Perimeter = sum of all sides Area = (a + b) x h / 2 
Circle 

Circumference = 2 x π x r Area = π x r ^{ 2 } 
Semicircle 

Circumference = π x r x D Area = (π r ^{ 2 })/2 
Note:The
perimeter of any shape is measured in
cm,m, miles or km. The
area of any shape is measured in
sq.cm,sq.m,sq.km or sq.miles.
Mensuration : Area and Perimeter
• Perimeter and Area of Irregular Shape
• Area and Perimeter of the Rectangle
• Area of Square (perimeter of square)
• Perimeter of Parallelogram(Area of Parallelogram)
• Area of Rhombus(Perimeter of rhombus)
• Area of Trapezoid (Trapezium)
• Perimeter and Area of Triangle
• Area of Circle
• Herons Formula
Surface Area :
• Surface Area of Cube
• Surface Area of Rectangular Prism(Cuboid)
• Surface Area of Cylinder
• Surface Area of Cone
• Surface Area of Sphere and Hemisphere
• Surface Area of Prism
• Surface Area of Pyramid
Volume :
• Volume Formulas
• Volume of Irregular Shape
• Volume of Cube
• Volume of Rectangular Prism(Cuboid)
• Volume of Cylinder
• Volume of Cone
• Volume of Sphere
• Volume of Hemisphere
• Volume of Prism
• Volume of Pyramid
Area Presentation
Home Page
RussiaUkraine crisis update  3rd Mar 2022
The UN General assembly voted at an emergency session to demand an immediate halt to Moscow's attack on Ukraine and withdrawal of Russian troops.